PAEE模拟试卷1
pets一级考试模拟附答案
pets一级考试模拟附答案一、选择题(每题2分,共20分)1. Which of the following is NOT a pet?A. DogB. CatC. FishD. PlantAnswer: D2. What do you need to do if you want to keep a pet healthy?A. Ignore itB. Feed it regularlyC. Let it stay outside all dayD. Never clean its habitatAnswer: B3. How often should you walk your dog?A. NeverB. Once a weekC. Once a dayD. Twice a dayAnswer: D4. What is the best way to show affection to your pet?A. Yell at itB. Ignore itC. Play with itD. Hit itAnswer: C5. Which of these is NOT a responsibility of a pet owner?A. Feeding the petB. Cleaning the pet's habitatC. Taking the pet to the vetD. Selling the petAnswer: D6. What should you do if your pet is sick?A. Ignore itB. Wait for it to get betterC. Take it to the vetD. Give it human medicineAnswer: C7. How can you tell if your pet is happy?A. It growls at youB. It hides from youC. It plays with youD. It bites youAnswer: C8. What is the most important thing to consider when choosinga pet?A. Its colorB. Its sizeC. Its needsD. Its priceAnswer: C9. How long should you wait before getting a new pet after your previous one has passed away?A. A few daysB. A few weeksC. A few monthsD. A yearAnswer: C10. What is the best way to introduce a new pet to your home?A. Leave it alone in a roomB. Introduce it to other pets immediatelyC. Gradually let it explore the houseD. Keep it in a cage all the timeAnswer: C二、填空题(每题2分,共20分)1. The most common pets are dogs, cats, and _______. Answer: fish2. Regular exercise is important for the health of your_______.Answer: dog3. A balanced diet is essential for the well-being of your_______.Answer: pet4. It is important to _______ your pet's habitat regularly. Answer: clean5. Socializing your pet with other animals can help prevent _______ behavior.Answer: aggressive6. Vaccinations are necessary to protect your pet from_______ diseases.Answer: infectious7. Training your pet can help improve its _______.Answer: behavior8. A pet's life span can vary greatly depending on its_______.Answer: species9. It is important to provide your pet with a comfortable and safe _______.Answer: environment10. Regular check-ups at the vet can help detect any health _______ early.Answer: issues三、简答题(每题10分,共40分)1. What are the benefits of owning a pet?Answer: Owning a pet can provide companionship, reduce stress, and teach responsibility.2. How can you ensure the safety of your pet when you are not at home?Answer: Ensure the pet is in a secure area, provide enoughfood and water, and consider using pet cameras or hiring apet sitter.3. What are some common health problems in pets and how can you prevent them?Answer: Common health problems include obesity, dental issues, and parasites. Prevention includes a balanced diet, regularvet check-ups, and proper grooming.4. How can you make your pet's environment more enriching? Answer: Provide toys for mental stimulation, create hiding spots for exploration, and ensure a comfortable resting area.。
1-0 CAP EAP模拟试卷-笔试
Test of EGAP, CAPTest of Englishfor General Academic Purposes (EGAP) Chinese Advanced Placement (CAP)中国大学先修课程通用学术英语课程考试The Speaking Test is held separately.考试时间:January 2015所有题目的答案全部写在答题纸上,写在试卷上的无效。
Note: This test is designed only for the students of CAP EAP course.版权所有,翻印必究Test of English for General Academic Purposes 姓名_______________________ 班级 _______________________学号_______________________ 准考证号_______________________学校_______________________ 考场号 _______________________ListeningPart 1Questions 1-10In this section, you will hear ten short conversations between two speakers. At the end of each conversation, a third voice will ask a question about what was said. Both the conversation and the question will be spoken only once. Listen to the conversations and choose the appropriate letters A-D and write them on your answer sheet. (答案填在答题纸上,每题0.5分)1. A. To play football. B. To watch a game.C. To visit his grandmother.D. To go to John’s birthday party.2. A. He is a rental agent. B. He is a hotel receptionist.C. He is a student counselor.D. He is a research specialist.3. A. Bicycling. B. Climbing.C. Sailing.D. Walking.4. A. Fitness facilities. B. Business facilities.C. Entertainment facilities.D. Training courses for water sports.5. A. The café. B. The bus station.C. The train station.D. The ticket office.6. A. Fishing. B. Cooking.C. Swimming.D. Putting up tents.7. A. In a book store. B. In a travel agency.C. In the library.D. In the Student Affairs Office.8. A. A hat. B. Jeans.C. Boots.D. Gloves.9. A. Policewoman and tourist. B. Professor and student.C. Doctor and patient.D. Wife and husband.10. A. Friend reunion. B. Business meeting.C. Holiday celebration.D. Graduation ceremony.1 / 13Part 2Passage 1Questions 11-15Complete the notes below. Write NO MORE THAN THREE WORDS / NUMBERS for each answer. Write your answers on your answer sheet.(答案填在答题纸上,11题1分,12-15每题0.5分)Passage 2Questions 16-20Complete the notes below. Write NO MORE THAN THREE WORDS / NUMBERS for each answer. Write your answers on your answer sheet. (答案填在答题纸上,每题1分)Part 3Questions 21-25Complete the notes below. Write NO MORE THAN THREE WORDS / NUMBERS for each answer. Write your answers on your answer sheet. (答案填在答题纸上,每题1分)2 / 13Questions 26-29Complete the sentences below. Write NO MORE THAN THREE WORDS / NUMBERS for each answer. Write your answers on your answer sheet. (答案填在答题纸上,每题1分)26. ________________ children in the UK now live in single-parent families.27. According to some sociologists, ________________ are responsible for the rise of single parenting.28. The largest group of lone parents have never ________________.29. Single parent families are more likely to live in ________________.Question 30. Write a summary on living alone. Your writing should be based on the following outline. The number of words should not exceed 60. (答案写在答题纸上,本题3分)Number of people living alone ____________________________________________________________Disadvantage #1 _______________________________________________________________________Disadvantage #2 _______________________________________________________________________3 / 13Integrated Reading and WritingPart 1Reading Passage 1The Missing StudentsBy Scott JaschikDecember 11, 20121. The nation's most elite colleges and universities have, in recent years, added numerousprograms to help students from low-income backgrounds enroll. And, at many such institutions, low-income students would not need to pay anything, or would have to make only very small contributions to the annual tab. So why, at some of these institutions, is one more likely to find a student with a second home than one with a Pell Grant?2. A new study finds that a majority of students with low incomes but high academic abilitynever apply to a single competitive college. Further, the study finds that many colleges are searching for these students at a very small number of high schools -- and in the process are missing lots of other talent. The study -- by Caroline M. Hoxby, a professor of economics at Stanford University, and Christopher Avery, a professor of public policy at Harvard University -- was released Monday by the National Bureau of Economic Research.3. Hoxby and Avery used data from the College Board and ACT to identify the population oflow-income, high-achieving high school seniors. They looked at students whose SAT or ACT scores were in the top decile of all test-takers. (And since only a minority of high school students take the SAT or ACT, that means the top 4 percent, as measured by tests, of the high school population).4. Students were included only if they had an A- or higher average in high school courses(although almost all of the students in this group had such an average). For wealth level, the study examined those with family incomes in the bottom quartile, or those with incomes up to $41,472. Hoxby and Avery note that students with these academic qualities are highly sought-after, and that most selective colleges would generally admit those who apply with those levels of academic achievement and economic disadvantage.5. After creating their focus pool and comparison pools of students who are from affluentfamilies but have similar academic credentials, the scholars used College Board and ACT data to track where the students reported their SAT or ACT scores. For affluent families, they found the expected pattern: students would apply to clusters of colleges where average test scores/ grades of admitted applicants were a good match, plus a few "stretch" institutions and4 / 13a few "safety" choices. That pattern is consistent with the kind of advice high school studentsreceive from their counselors.6. A minority of low-income, academically talented students follow the same pattern, and thesestudents exhibit what the scholars call "achievement typical" behavior. But most exhibit "income typical" behavior when it comes to applying for colleges, and they apply to the sorts of institutions where those of similar income (but far less demonstrated academic ability) tend to enroll.7. Indeed, 53 percent of low-income, highly talented students do not apply to a single selectivecollege that doesn't have significantly lower average grades and test scores for admitted applicants than for these students -- and these students do apply to at least one college that is not selective at all. Many of these students apply to a single nonselective college, or to a single nonselective college and one moderately selective college. And more than half of these students do not have a single application sent to what might be considered a "reach" college for them. In other words, students who could probably gain admission to highly selective colleges (and receive financial aid from them) are not even trying to get in.8. Why aren't these students applying? The authors write that -- from their data on the students'high schools -- most of these students are unlikely to have met a teacher, counselor or older student who ever attended a selective college.9. But what about the minority of low-income, high-achieving students who do apply? Thestudy found that these students are "highly concentrated" in a very small number of high schools, frequently those requiring certain test scores or grades to be admitted. Many of these selective high schools do have mentors who know about selective colleges, after-school tutoring programs and more. And the students from these high schools are as likely to be admitted to and to succeed at highly selective colleges as are their wealthier counterparts. 10. But Hoxby and Avery express fear that this pattern reflects a tendency by colleges to recruitonly at these high schools (where they will find a critical mass of talented, low-income students) and not the many others where academic achievement may be more rare. The high schools having success at placing students in competitive colleges are in large metropolitan areas (generally from 15 cities) and their students are "far from representative" of the academic talent among low-income students, the authors write.11. Further, competitive colleges are spending so much time recruiting at these relatively fewhigh schools that they may be "tapped out," Hoxby and Avery write. "Their students are already so recruited by selective colleges that further recruitment may merely shift students among similar, selective colleges, not cause students to change their college-going behavior in more fundamental ways."12. In their conclusion, Hoxby and Avery say that their work shows there are more low-incomestudents of high academic talent out there. Broadening recruiting would cost more in time and money than the current system, they write. But colleges today appear to be "searching5 / 13under the lamp post" for the small number of students that are visible, rather than searching "where the students are."Reading ComprehensionMultiple Choice and Sentence CompletionQuestions 1-10Directions: Both multiple choice questions and sentence completion statements are used to check your reading comprehension. You should either choose the appropriate letters A-D or complete the statements with NO MORE THAN three content words and write them on your answer sheet. (答案填在答题纸上,每题0.5分)1. The phrase “missing students” in the title most probably refers to __________ students.A. high-income, high-achievingB. high-income, low-achievingC. low-income, high-achievingD. low-income, low-achieving2. It can be inferred from the passage that “a student with a second home” (para. 1) refers to a__________ student.3. It can be inferred from the passage that “one with a Pell Grant” (para. 1) refers to a__________ student.4 & 5. Hoxby and Avery identified students for the focus group based on college admissions testscores, ___________ average, and __________.6 & 7. College Board and ACT data enabled Hoxby and Avery not only to identify students forthe focus group and the comparison group, but also informed them what colleges __________ and whether they were likely to have met someone who attended a _________.8. The word “stretch” in “a few ‘stretch’ institutions” (para. 5) can be best replaced with theword “__________” from the passage.9. Students in the high schools that succeed in “placing students in competitive colleges” are“‘far from representative’ of the academic talent among low-income students” (para. 10) in that these students are __________.10. The phrase “tapped out” (para. 11) most likely means __________.6 / 13Summary CompletionQuestions 11-20Directions: Complete the summary below with the word that is most appropriate from the reading. Choose your answers from the words listed in the box. Write them on your answer sheet. (答案填在答题纸上,每题0.5分)Note: There are more words than necessary.According to a new study by Prof. Hoxby and Prof. Avery, many high-achieving, low-income students who could probably gain admission to elite colleges never even (11) __________ and meanwhile elite colleges searching for these students tend to (12) __________ at a very small number of high schools. These students, with the exception of those from a small number of (13) __________ high schools, tend to apply to colleges that mostly enroll low-income, (14) __________-performing students. This is termed (15) __________-typical behavior. In contrast, a minority of these students exhibit (16) __________-typical behavior. That is, they would apply to colleges that are academically a good (17) __________ to them, plus a few institutions that are slightly above their ability level and a few that they can gain easy admission to. This is the same pattern that their (18) __________ counterparts follow.Hoxby and Avery attributed the different college-going behavior patterns to whether the talented, low-income students are likely to have teachers, mentors or older students who know about selective colleges. They also suggested that elite colleges should (19) __________ recruiting so as to enroll more low-income, high-performing students that are traditionally not (20) __________ to these colleges.Writing TaskAcademic Writing (作文写在答题纸上,本题25分)Writing an Argumentative Essay7 / 13Directions: Write a well-organized academic essay on the topic below. Your essay will be graded on content, organization and appropriate use of English. You may refer to the reading passage while you are writing.Essay topic: According to Hoxby and Avery, most selective colleges in the UnitedStates would welcome high-achieving students from low-income families. Do youthink college admissions should favor low-income students over those from affluent families? Write no less than 250 words.Part 2Reading Passage 2The dairy debate: Does milk build stronger bones?Some scientists are questioning dairy products' effectiveness in helping prevent osteoporosis.By Alice Lesch KellyMarch 07, 20051.Bones need calcium. Doctors, dietitians and researchers agree on this point. Conventionalwisdom holds that dairy foods are the best source of calcium, and that American adults need to pump up their dairy intake to get the large amount of calcium their bodies need every day.2.Not everyone, however, believes the conventional wisdom. Researchers are even raisingquestions about whether children need as much milk as guidelines recommend. A review article in the current issue of the journal Pediatrics concludes that there is "scant evidence"that increasing dairy intake is the right way to promote bone health in children. Lately, a small but highly respected band of scientists has been speaking out. They say Americans need less calcium than dietary guidelines recommend, and that drinking cup after cup of milk is not the best way to get it.3. On one side are the federal government, the dairy industry and the majority of the nutritioncommunity. Milk plays a big part in the dietary guidelines recently released by the federal government. Anyone older than 8 is urged to drink three cups of low-fat or fat-free milk or eat an equivalent amount of yogurt or cheese each day. The thinking behind this8 / 13recommendation is that the calcium in dairy products helps build strong bones and wards off osteoporosis, a disease in which bones become porous and break easily.4. On the other side are nutrition researchers from Harvard and Cornell universities who saythat when it comes to dairy, the U.S. dietary guidelines have gone too far. They believe that exercise, heredity, hormone levels, smoking, protein intake and intake of vitamins D and K matter more than milk.5. The debate over dietary calcium is occurring because of rising concern over osteoporosis, orlow bone mass. An estimated 10 million Americans older than 50 -- most of them women -- have osteoporosis, and 34 million are at risk for developing it. By 2020, one in two Americans older than 50 will be at risk for fractures from osteoporosis, according to the U.S.Surgeon General who issued a report in October that sounded an alarm on bone health. Bone health is so important that President Bush declared 2002-11 as the "decade of the bone and joint."6. As for the link between dairy products and osteoporosis, "there's no solid evidence thatmerely increasing the amount of milk in your diet will protect you from breaking a hip or wrist or crushing a backbone in later years," says Walter C. Willett, chairman of the Department of Nutrition at the Harvard School of Public Health. Willett bases his calcium conclusions on research that he and his team at Harvard have done during the last 25 years.He is one of the principal investigators of the Nurses' Health Study, which has looked at the diet and health of tens of thousands of nurses since 1980, and of the Health Professionals Follow-Up Study, an all-male study underway since 1986.7. When Willett and his colleagues investigated the milk-drinking habits of 72,000 women inthe Nurses' Health Study, they found that milk consumption was not associated with a lower risk of hip fracture, a measure of bone strength. In fact, women who drank milk twice a day were as likely to suffer a bone break as women who drank it once a week. Likewise, the Health Professionals Follow-Up Study failed to find a relationship between calcium intake and bone fractures in more than 43,000 men. And a 2003 Swedish study of more than 60,000 women, which was published in the journal Bone, found no association between dietary calcium intake and fracture risk.8. "We do need some calcium -- it's essential -- but the question is, how much?" says Willett,author of the 2001 book "Eat, Drink, and Be Healthy." He believes the body needs 500 to 700 milligrams of calcium daily rather than the 1,000 to 1,500 milligrams a day recommended by the dietary guidelines.9. T. Colin Campbell, Professor Emeritus of Nutritional Biochemistry at Cornell University,also questions dairy's place in the dietary guidelines. "I like dairy. I grew up on a farm. But9 / 13one has to look at the facts," he says. "Dairy has been considered a health food, and that's an unfortunate myth."10. Campbell's views come from observations he and his colleagues made during a series ofnutritional studies that began in 1983 and are collectively known as the China Study. In these studies, Campbell found that Asians, who consume far less dietary calcium than Americans, have one-fifth the bone fracture rate of Americans. "Those countries that use the most cow's milk and its products also have the highest fracture rates and the worst bone health,"Campbell says. He details the results of his work in a new book called "The China Study." In Asian countries, people can get all the calcium their bodies need from plant sources such as leafy green vegetables, Campbell says.11. Americans have weak bones not because they drink too little milk but because they drink toomuch, Campbell says. Animal protein, such as the protein in milk, makes blood and tissues more acidic, and to neutralize this acid, the body pulls calcium, which is a very effective base, from the bones. Because dairy products contain substantial amounts of animal protein, drinking milk actually robs the bones of calcium, he says. The more meat and milk Americans eat, he says, the more calcium they need to consume to process that protein.12. That's ridiculous, osteoporosis researchers say. Although they agree that eating excessiveamounts of protein may leach calcium from the bones, they see moderate amounts of protein-rich dairy foods as an excellent way to keep bones strong. "There is a growing number of studies that have shown an association between higher protein intake and less bone loss,"says Bess Dawson-Hughes, director of the Bone Metabolism Laboratory at Tufts University.13. To be sure, many studies do point to a connection between dairy and bone health. A researchreview of 138 studies exploring the relationship between bone health and calcium intake, including numerous studies that used dairy products as the calcium source, found overwhelming evidence that lifelong calcium intake is one of the most significant factors for determining risk of an osteoporotic fracture, says Deanna Segrave-Daly, a registered dietitian and spokeswoman for the National Dairy Council. The review was published in the American Journal of Clinical Nutrition in 2000.14. But that same review reported that not all dairy foods boost bone health. "Foods such as milkand yogurt are likely to be beneficial; others, such as cottage cheese, may adversely affect bone health," the review states. "The high calcium content of processed cheese products may be offset by the high sodium, polyphosphate, and protein contents of these products, which can be expected to increase calcium losses."15. Researchers say there are several possible reasons why milk study results vary so. Mostclinical trials -- studies in which one group of people increases calcium intake and anothergroup does not -- have shown that adding calcium to the diet increases bone density. But most clinical trials last for less than three years, says Diane Feskanich, an investigator for the Nurses' Health Study. "It could be that bone density does not continue to increase in the long run -- in fact, a study that went on for three years found that after an initial increase in bone density, it did not continue to increase in the third year." Observational studies such as the Nurses' Health Study "are usually run over many years and in this way better suited to determine the long-term effects of high calcium intakes," Feskanich says.16. It is also possible that vitamin D is as important or more important than calcium formaintaining bone density into adulthood. Researchers don't understand exactly what role vitamin D plays, but there is a growing belief in the scientific community that the poor state of the nation's bones has something to do with a widespread shortage of vitamin D. The body gets vitamin D from food and sunlight, and as people cover up to avoid the cancer-causing rays of the sun, they may also send vitamin D levels plummeting. "Most Americans are short on vitamin D," Willett says.17. The rest of the diet may play a part in bone health too, in ways researchers don't yetunderstand. Other nutrients in the diet may either help or hinder calcium absorption. "We are overfed, but are we eating the right things?" asks Lori Hoolihan, nutrition research specialist with the Dairy Council of California. "We are a fat nation, but in some ways we are malnourished."18. Even those researchers who agree with the three-glasses-a-day recommendation say there is alimit to what dairy calcium can do. "The gene pool accounts for most of your risk," Dawson-Hughes says. During the years in which people build bone mass -- from birth to about age 20 or 25 -- bone density is determined 80% by genetics and only 20% by lifestyle factors such as exercise and diet. Bone loss, which starts to occur after age 25 or so, is determined half by genetics and half by lifestyle choices, Dawson-Hughes says.19. Finally, there is an emotional side to this issue. The dairy debate is conducted in large part bytwo groups who accuse each other of twisting science and letting money or ideology cloud their views: the dairy industry and vegetarians. The dairy industry accuses the anti-dairy camp of promoting an animal-free diet whether it makes nutritional sense or not. Dairy critics charge the dairy industry with bankrolling pro-dairy research and influencing the government's dietary recommendations.20. One thing both parties agree on is that exercise helps to build bones and maintain bonedensity throughout life.Reading ComprehensionQuestions 21-25Matching: Decide which of the following views (A-E) is held by each of the following people and write the appropriate letter on your answer sheet.(答案写在答题纸上,每题1分)Note: There are more views than people so you will not use them all.Questions 26-30Questions and AnswersDirections: Answer the following questions based on the readings. Be sure to write complete sentences. There are several possible ways to answer each question. You should use your own words as much as possible. Your answers will be graded on content and accurate use of English.NOTE: Your answer will be marked down if it contains sentences taken directly from the readings.(答案写在答题纸上,每题2分)26. What has caused the diary debate, according to the passage?27. How are sources of calcium different for Asians and Americans? How are Asians andAmericans different in bone health as a result, according to Colin Campbell?28. Walter Willett’s studies and studies cited by dairy supporters lead to dramatically differentconclusions. What can be a major reason for the difference? What conclusion might be drawn when results of all these studies are taken into consideration?29. What do dairy supporters accuse dairy critics of?30. What do dairy critics accuse dairy supporters of?。
浙江省绍兴市2023年初中学业水平模拟考试英语试卷(一)(考试A4版)
绍兴市2023年初中学业水平模拟考试(一)英语试题考生须知:1. 全卷共10页,有七大题,76小题。
全卷满分120分,考试时间100分钟。
2. 答案必须写在答题纸相应的位置上,写在试题卷、草稿纸上均无效。
3. 答题前,请认真阅读答题纸上的《注意事项》,按规定答题。
试卷I(选择题共70分)(一)听力部分(共25分)一、听力(本题有15小题,第一节每小题1分,第二、三节每小题2分,共计25分)第一节:听小对话,回答问题。
( )1.How many cans has Bill recycled?A.Two.B.Five.C.Seven.( )2.What is the rocket made of?A.Metal.B.Wood.C.Plastic.( )3.How will they go to school?A.By car.B.On foot.C.By bike.( )4.What is used to produce electricity in Eric’s hometown?A.Wind.B.Water.C.Solar power. ( )5.Who is wanted on the phone?A.A student.B.The head teacher.C.Mr Green.第二节:听较长对话,回答问题。
听下面一段对话,回答第6—7小题。
( )6.What might Robert be?A.A driver.B.A doctor.C.A policeman. ( )7.Who called 120 for help?A.Kate.B.Danny.C.Robert.听下面一段对话,回答第8—10小题。
( )8.What did Tony do in Sydney?A.He had a trip.B.He visited his friends.C.He studied English. ( )9.How long did Tony stay there?A.About two weeks.B.About two months.C.About two years. ( )10.Where did Tony stay?A.In a school.B.In a family.C.At a hotel.第三节:听独白,回答问题。
高考英语全真模拟试题1.doc
高考英语全真模拟试题 1第I卷(三部分,共115分)第一部分:听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
第一节(共5小题;每小题1.5分/1分,满分7.5分)听下面5段对话。
每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. How many dollars does the man still need to buy the dictionary?A. Three dollars.B. Four dollars .C. Five dollars.2. What's Mary's address?A. 1664 Garden Street.B. 1646 Guard Street.C. 1646 Garden Street.3. Where is Miss White from?A. America.B. Australia.C. Japan.4. When is the woman’s birthday?A. April 1st.B. April 2nd.C. April 3rd.5. What will Jack do?A. He will play tennis.B. He will ask Bill to play tennis.C. He will go skating.第二节(共15小题;每小题1.5分/1分,满分22.5分/15分)听下面5段对话或独白。
每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项,并标在试卷的相应位置。
【3套试卷】宁波市中考第一次模拟考试英语精选含答案
中考模拟考试英语试卷英语(二)注意:(考试时间:120 分钟 满分:150 分)请把所有答案填涂或书写到答题卡上!请不要错位、越界答题! 在本试题上答题无效。
I .听力(共三节,20 小题,每小题 1.5 分,满分 30 分) 第一节听句子。
听下面五个(. C 12.CC 3.C4.5. A B C第二节听对话。
听下面七段对话,从每小题所给的A、B、C 三个选项中选出正确答案。
(每段对话读两遍)听第一段对话,完成第6小题。
6. Where are they now?A. At school.B. At home.C. At a shop.听第二段对话,完成第7小题。
7. How does the woman like the play?A. It is boring.B. It is interesting.C. It’s just so-so.听第三段对话,完成第8小题。
8. When will Mr. Green come back?A. At 7:15.B. At 7:30.C. At 7:45.听第四段对话,完成第9小题。
9. How much will the woman pay?A. 6 yuan.B. 9 yuan.C. 12 yuan.听第五段对话,完成第10、11小题。
10. What kind of rooms does the woman book?A. A single room and a double room.B. A single room and two double rooms.C. T wo single rooms and a double room.11. How long will the woman keep the rooms?A. Two hours.B. Two nights.C. Two weeks.听第六段对话,完成第12、13小题。
12. What is the man doing on the Internet?A. Buying a cap.B. Playing games.C. W atching a movie.13. What will the woman do next?A. Buy shoes on the Internet.B. Go shopping with the man.C. Learn how to shop on line.听第七段对话,完成第14、15小题。
浙江英语一模试题答案
浙江英语一模试题答案浙江省2023年普通高等学校招生全国统一考试模拟试题英语试题参考答案第一部分:听力(共两节,满分30分)第一节(共5小题;每小题1.5分,满分7.5分)1. C2. D3. A4. B5. C第二节(共15小题;每小题1.5分,满分22.5分)6. A7. B8. C9. A 10. D11. A 12. D 13. B 14. C 15. D16. A 17. C 18. B 19. A 20. D第二部分:阅读理解(共两节,满分40分)第一节(共15小题;每小题2分,满分30分)阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。
21. D 22. C 23. B 24. A 25. D26. A 27. B 28. C 29. D 30. A31. B 32. C 33. D 34. A 35. B第二节(共5小题;每小题2分,满分10分)根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。
选项中有两项为多余选项。
36. E 37. F 38. G 39. H 40. I第三部分:语言知识运用(共两节,满分45分)第一节完形填空(共20小题;每小题1.5分,满分30分)41. C 42. A 43. D 44. B 45. A46. D 47. B 48. C 49. A 50. D51. A 52. B 53. C 54. D 55. B56. C 57. D 58. A 59. B 60. C第二节语法填空(共10小题;每小题1.5分,满分15分)61. 去掉“a” 62. to live 63. happier 64. was 65. as66. 主语和be动词之间的“and”去掉 67. 去掉“the” 68. to 69. us 70. but第四部分:写作(共两节,满分35分)第一节短文改错(共10小题;每小题1分,满分10分)71. 错误:more 改正:other72. 错误:is 改正:are73. 错误:去掉“a” 改正:(无改动)74. 错误:us 改正:me75. 错误:去掉“the” 改正:(无改动)76. 错误:去掉“the” 改正:(无改动)77. 错误:去掉“and” 改正:or78. 错误:去掉“the” 改正:(无改动)79. 错误:去掉“the” 改正:(无改动)80. 错误:去掉“the” 改正:(无改动)第二节书面表达(共1小题;满分25分)81. 假定你是李华,你的英国朋友Peter来信询问你校图书馆的情况。
模拟试卷(一)参考答案
A
D
A
B
B
A
C
C
A
D
题号
41
42
43
44
45
46
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D
C
C
C
A
E
B
A
D
C
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51
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53
54
55
56
57
58
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60
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E
E
A
C
C
E
C
B
A
C
题号
61
62
63
64
65
66
67
68
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70
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D
C
B
D
E
D
B
C
A
C
题号 答案 题号 答案 题号 答案
71
72
73
74
75
76
77
78
79
80
ABCD
15.2 15.3 15.4 15.5 16.1
16.2 16.3 16.4 16.5
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案
D
A
B
A
B
C
D
E
C
A
题 号
17.1
17.2 17.3 17.4 17.5 18.1
18.2 18.3 19.1 19.2
答
案
E
E
C
A
A
E
C
D
B
B
题 号
19.3
20.1 20.2 20.3 20.4 20.5
2023年中考英语第一次模拟考试(宁波卷)(教师版)
2023年中考英语第一次模拟考试(宁波卷)试题卷I一、完形填空(本题有15小题,每小题1分,共计15分)阅读下面短文,掌握大意,然后从A、B、C、D四个选项中选出最佳选项。
I was a receptionist (接待员) for an animal doctor fifty years ago. As an animal lover, I couldn't1seeing any animals in pain.One day, when we were closing the office, a young man ran up to us holding a(n) 2 doberman in his arms and asking us to save his life. The four-month-old dog had been 3by a car.The doctor and I ran back into the operating room 4to save him in time. The animal doctor worked tirelessly for 5seemed like hours. The dog had broken many bones, including his spine (脊柱). He was badly hurt and we thought that 6he got better, he would never walk again.However, that day forever 7my life. I became the assistant in all medical things. At that time, one of my first jobs was to give that dog daily 8carefully. I remember moving his tiny 9with my full attention to try to keep his muscles from becoming weaker and weaker. Weeks went by 10one day, he continued to push back till he could use his legs.“He finally went 11the trouble,” we cried.A year later as I was calling the name of the next patient, a huge doberman jumped 12 me. That moment I found 13pressed against the wall with this dog standing on his behind legs, his front paws (爪子)on my shoulders. He washed my face with 14kisses! I felt amazed that moment.I went on to be an animal doctor for 14 years and now I am a volunteer at a no-kill animal shelter to help the homeless animals. The 15with a thankful heart changed my life so much.1.A.help B.mind C.stand D.start2.A.upset B.unusual C.healthy D.wounded3.A.kicked B.hit C.lifted D.shocked4.A.at present B.at times C.at last D.at once5.A.what B.who C.why D.where6.A.if only B.as if C.only if D.even if7.A.improved B.changed C.reflected D.broke8.A.walk B.shower C.treatment D.food9.A.face B.tail C.legs D.paws10.A.until B.since C.unless D.after11.A.through B.with C.into D.on12.A.beside B.toward C.behind D.among13.A.himself B.ourselves C.themselves D.myself14.A.helpful B.joyful C.peaceful eful15.A.patient B.man C.doctor D.volunteer五十年前我是一名兽医的接待员,曾经挽救了一只小狗的生命,这件事改变了我的一生。
2023年广东省普通高中学业水平合格性考试英语科模拟测试卷(一)(附答案及解析)
2023年广东省普通高中学业水平合格性考试英语科模拟测试卷(一)(时间90分钟,总分150分)Ⅰ.情景交际(共5小题;每小题3分,满分15分)阅读下列简短对话,从每题所给的A、B、C和D项中选出最佳选项,将对话补全。
1.—There is always so much work to do.I am going to be driven mad.—________.It's going to be all right.A.No way B.Go aheadC.Keep cool D.Never mind2.—Do you know the newly appointed CEO?—________.A.I'll check it B.Only that there is oneC.More often than not D.It will come to me3.—Let me introduce myself.I'm Robert from Oxford University.—________.A.That's OK B.No problemC.Nice to meet you D.Go ahead4.—I've got a bad cold.—________.You'd better see a doctor.A.Never mind B.Nothing seriousC.It doesn't matter D.I'm sorry to hear that5.—Will you ________ this message to Mr White,please?—Sorry,I can't.He doesn't work here any longer.A.give B.fetchC.have D.goⅡ.阅读理解(共15小题;每小题3分,满分45分)阅读下列短文,掌握其大意,然后从每题所给的A、B、C和D项中选出最佳选项。
英语a1pre模拟卷
英语a1pre模拟卷Oh, man, this A1 pre-exam is really giving me a headache! I'm not sure if I'm ready for it. I've been studying hard, but there's so much to remember.You know, my favorite part of English is speaking it. But when it comes to exams, writing becomes a challenge. I wish they could just have a speaking section!Remembering all those grammar rules is tough. I mean, why do we have to know the difference between "I am" and "I was"? It's like trying to keep track of a million little details.But hey, I'm not giving up. I'm going to put on my best effort and see how it goes. At least I'll be able to say I gave it a shot, right?One thing I'm excited about is the chance to show what I've learned. Even if I don't get a perfect score, it's achance to practice and improve. And that's what it's all about, isn't it?Okay, time to get back to studying. I'll see you all after the exam! And maybe we can celebrate with a cup of coffee or tea, depending on how it goes. Fingers crossed!。
2020年公共英语一级考试模拟试题(一).doc
2020 年公共英语一级考试模拟试题(一)一、单项填空:阅读下面的句子和对话,从三个选项中选出一个能填入空白处的选项,并在答题卡将该项涂黑。
1.He is badly ill. We must _____ a doctor at once.A. send toB. send for .C. send away2.The hospital _______last year.3.When I came into the classroom, the teacher_____something on the blackboard.A. is writingB. was writingC. wrote4. --How long have you been ill?A. Since last weekB. A week agoC. Once aweek 5. Everybody is here _____Mike.A .not B. and C. except6.We don ’t understand the passage ___ there are afew .new words in it.A. andB. unlessC. because7. The TV set is very nice. How long have you _______it?A. boughtB. hadC. taken8. --- Shall I get one more apple for you, Dad?--- Thanks, but you _______. I ’ve had enough.A. may notB. must notC. needn’t9.--- _________is your shirt?--- It is 100yuan.10.He is _______kind an old man that all the childrenlike him.A. veryB. soC. such二、完形填空:阅读下面短文,从短文后所给的三个选项中选出能填入相对应空白处的选项,并在答题卡 1 上将该项涂黑。
(完整版)全国英语等级考试一级模拟试题1
(完整版)全国英语等级考试一级模拟试题1全国公共英语等级考试(1级)模拟试题(2)第一节:单项选择从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑.1. ----- will you be able to finish the job this week?----- ___________ , but I'm not skilled enough, you know.A.I can't say soB.I expect soC. I'm sure soD. I don't know so2. We arrived at the station _______ late, or we the bus.A. too much; would catchB. a little too; had caughtC. much too; would have caughtD. too much; would have caught3. Is it the watch you want ________?A. to have it repairedB. to repair itC. to have repairedD. to have repaired it4. The two thieves fled the town separately, _______ a bag.A. each carryingB. whose that watch isC. whose watch is thatD. whose watch is5. The little boy can't tell ________.A. whose is that watchB. whose that watch isC. whose watch is thatD. whose watch is6. If a baby bird stays _______ for two or three weeks after leaving the nest, it has a fair chance of becoming an adult.A. livingB. livelyC. aliveD. live7. We will not attack ______ we are attacked;if attacked,we will certainly counter-attack.A. ifB. whenC. unlessD. even if8. You can take ______ seat you like.A. no matter whatB. no matter whichC. whatD. whichever9. I ______ to speak to you all these days.A. wantedB. have wantedC. shall wantD. shall be wanting10.A burning cigarette he threw into the wastepaper basket ______ fire to the hotel.A. madeB. setC. causedD. caught11."Do you hear someone knocking at the door?""Yes, I did. I heard him ______ three times."A. knockingB. knockedC. being knockingD. knock12.Peter,John and Tom each ______.A. say they came firstB. says they came firstC. says he came firstD. say came first13.Through long power lines electricity goes ______.A. to the place neededB. there it is neededC. where it is neededD. which it is needed14. ______ from the apple tree.A. It down fellB. there it is neededC. Down fell itD. Fell it down15.The service in this restaurant is very poor;there are not enough waiters to wait ______ customers.A. onB. forC. withD. to第二节:完形填空阅读下面短文,从短文后所给各题的四个选项(A、B、C、D中选出能填入相应空白处的最佳选项,并在答题卡上将该项涂黑.Linda was a few minutes late. Wilson 16 the office when she got there. His secretary told her he 17 back in a few minutes. She 18 sit down and wait for a few minutes in outer office."I'll never get this job," she 19 herself. For a moment she wanted to 20 the building. Just then, Wilson came 21 the door and hurried into his office. A few minutes 22 his secretary took Linda in and introduced her,Linda apologized 23 . Wilson didn't seem to 24 .They chatted casually (随便地) for a few seconds and then 25 . He 26 her letter of application."You've never worked in radio or television before, 27 ? "he said. Now she was 28 that she would not get the job. Wilson asked her 29 questions.30 he seemed impressed with her other qualifications(资格).She was 31 when he asked her if she could start soon. "I wonder if you'd mind 32 next month?" he asked 33 .34 seemed she had got the job 35 .16. A. had left B. has left C. was left D. would be leaving17. A. had been B. came C. was D. would be18. A. should B. had to C. would D. was able to19. A. told B. spoke C. said D. talked20. A. run out B run of C. run out of D. run away21. A. through B. across C. cross D. along22. A. latest B. last C. late D. later23. A. to being late B. for being late C. to be late D. for the late24. A. mind B. listen C. notice D. hear25. A. took down with business B. came down to business C. settled down with business D. got down to business26. filled out B. took out C. sent out D. threw away27. A. haven't you B. do you C. have you D. don't you28. A. even more sure B. much sure C. even sure of D. sure of29. A. a few such B. a few more C. much a few D. more a few30. A. As her surprise B. To her surprised C. For her surprisedD. To her surprise31. A. even more surprise B. even much surprise C. even more surprisedD. even much surprised32. A. starting B. to start C. start D. started33. A. by a smile B. with a smile C. by smile D. with smile34. A. It B. This C. That D. He35. A. not at all B. after all C. all D. after that第三部分:阅读理解阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
公共英语一级考试模拟练习题及答案
公共英语一级考试模拟练习题及答案公共英语一级考试模拟练习题及答案PETS的初始级,其标准略高于我国九年义务制教育——初中毕业时的英语水平。
准备参加该级考试的考生,一般在18岁以下(含18岁)。
在普通初中学习了3年的英语课程,并为准备就业参加了有关的英语培训或自学了相同的内容。
下面是店铺为大家搜索整理的公共英语一级考试模拟练习题,希望能给大家带来帮助!Surprisingly, no one knows how many children receive education in English hospit als, still less the content or quality of that education. Proper records are jus t not kept. We know that more than 850.000 children go through hospital each year, and that every child of school age has a legal right to continue to receive education wh ile in hospital. We also know there is only one hospital teacher to every 1,000 children in hospital.Little wonder the latest survey concludes that the extent and type of hospital t eaching available differ a great deal across the country. It is found that half the hospitals in England which admit children have no teacher. A further quarter have only a part-time teacher. The special children’s hospitals in major cities do best; general hospitals in the country and holiday areas are worst off. From this survey, one can estimate that fewer than one in five children have som e contact with a hospital teacher—and that contact may be as little as two hour s a day. Most children interviewed were surprised to find a teacher in hospital at all. They had not been prepared for it by parents or their own school. If the re was a teacher they were much more likely to read books and do math or number work; without a teacher they would only play games.Reasons for hospital teaching range from preventing a childfalling behind and m aintaining the habit of school to keeping a child occupied, and the latter is of ten all the teacher can do. The position and influence of many teachers was summ ed up when parents referred to them as “the library lady” or just “the helper”. Children tend to rely on concerned school friends to keep in touch with school w ork. Several parents spoke of requests for work being ignored or refused by the school. Once back at school children rarely get extra teaching, and are told to catch up as best they can.Many short-stay child-patients catch up quickly. But schools do very little to e ase the anxiety about falling behind expressed by many of the children interview ed 66. The author points out at the beginning that___.A. every child in hospital receives some teachingB. not enough is known about hospital teachingC. hospital teaching is of poor qualityD. the special children’s hospitals are worst off67. It can be inferred from the latest survey that___.A.hospital teaching across the country is similarB. each hospital has at least one part-time teacherC. all hospitals surveyed offer education to childrenD.only one-fourth of the hospitals have full-time teachers68. Children in hospital usual1y turn to___in order to catch up with the ir school work.A. hospital teachersB. schoolmatesC. parentsD. school teachers69. We can conclude from the passage that the author is___.A. unfavourable towards children receiving education in hospitalsB. in favour of the present state of teaching in hospitalsC. unsatisfied with the present state of hospital teachingD. satisfied with the results of the latest survey短文大意这篇文章通过一次调查,反映了当孩子们生病住院时,医院里的教学问题。
2022-2023学年浙江省宁波市高三上学期高考与选考模拟考试英语试卷(高考一模)带讲解
11. How many questions did the woman answer? A. Four. B. Five. C. Eight. 12. What did the speakers just do? A. A competition. B. Some homework.
宁波市 2022 学年第一学期高考与选考模拟考试 英语试题
第一部分 听力 (共两节, 满分 30 分) 第一节 (共 5 小题: 每小题 1.5 分, 满分 7.5 分) 听下面 5 段对话。每段对话后有一个小题, 从㕄中所给的 A、B、C 三个选项中选出最佳选 项。听完每段对话后, 你都有 10 秒钟的时间来回答有关小题和阅读下一小题。每段对话仅 读一遍。
Here, in this small French Polynesian island, you’ll find picturesque beaches, appealing jungles and luxurious
resorts. The island’s extinct volcano, Mount Otemanu, makes a challenging hike, and the friendly Bora Bora locals
1.What does the woman recommend the man to buy? A. Some teabags. B. A teacup. C. A teapot. 2.What happens to the man’s phone? A. It’s lost again. B. It’s too old to update the system. C. It needs more money for a data package. 3.What does the woman care most about the bookshelf? A. The height. B. The size. C. The color. 4.How does the man usually get to work? A. By bus. B. By car. C. By train. 5.What’s the problem with the woman’s computer according to the man? A. Its fan is broken. B. It’s quite old. C. It’s too dirty.
浙江省宁波市慈溪市2022-2023学年高三第一次模拟考试英语试卷含解析
Most people regard this as a reasonable sort of decision. But it isn’t. Countless studies show that the unstructured 30-minute interview is virtually worthless as a predictor of long-term performance by any criteria that have been examined.
C.Please don't say soD.No, thanks
11.All of us have the desire to visit the three main temples in Athens, especially ______ that contains a gold and ivory statue of Athena.
C.beats my brains outD.pulls my legs
第二部分 阅读理解(满分40分)阅读下列短文,从每题所给的A、B、C、D四个选项中,选出最佳选项。
21.(6分)Statistics often sounds like a dry subject, but sometimes it’s necessary to take a statistics course to get the correct answer to this problem. Take the following case for example: a football scout (球探)hears of a player who has powered his team to a good win-loss record. His coaches think he’s one of the most talented players they’ve seen. But the scout is unimpressed by the one practice game he sees him in; he tells his manager it’s not worth trying to recruit (录用)the player.
全国英语等级考试(一级)模拟试题
全国英语等级考试(一级)模拟试题编辑整理:尊敬的读者朋友们:这里是精品文档编辑中心,本文档内容是由我和我的同事精心编辑整理后发布的,发布之前我们对文中内容进行仔细校对,但是难免会有疏漏的地方,但是任然希望(全国英语等级考试(一级)模拟试题)的内容能够给您的工作和学习带来便利。
同时也真诚的希望收到您的建议和反馈,这将是我们进步的源泉,前进的动力。
本文可编辑可修改,如果觉得对您有帮助请收藏以便随时查阅,最后祝您生活愉快业绩进步,以下为全国英语等级考试(一级)模拟试题的全部内容。
全国英语等级考试(一级)模拟试题第一部分听力(略)第二部分英语知识运用第一节单项填空阅读下面的句子和对话,从三个选项中选出一个能填入空白处的最佳选项,并在答题卡将该项涂黑。
26. He is badly ill. We must ___B__ a doctor at once.A. send toB. send forC. send away27。
The hospital ____C___ last year。
A。
built B. was built C. has been built28。
When I came into the classroom, the teacher ___B__something on the blackboard。
A. is writing B。
was writing C. wrote29. —-How long have you been ill? -— AA。
Since last week B。
A week ago C。
Once a week30. Everybody is here __C___Mike.A 。
not B. and C. except31. We don’t understand the passage __C_ there are a few new words in it。
雅思模拟试题1答案
雅思模拟试题1答案本文将为你提供雅思模拟试题1的答案,帮助你更好地理解和应对考试。
以下是对每个题目的解析和解答。
让我们开始吧!第一部分:听力(20分钟)1. C) 10:152. B) Sports activities3. A) French4. A) Shopping5. C) Music6. B) History7. C) The cinema8. B) The Blue Hotel9. A) The beach10. C) $150第二部分:阅读(60分钟)11. D) The changes in mobile phone technology over the years解析:本题是找出文章的主题。
根据第一段中提到的“over the years, the technology behind mobile phones has greatly advanced”可以得出答案。
12. C) The impact of mobile phone usage on human behavior解析:根据第二段中提到的“Mobile phone usage has le d to changes in human behavior”可以得出答案。
13. A) Different communication methods in different time periods解析:根据第三段中提到的“People had to rely on other forms of communication such as letters and landline telephones”可以得出答案。
14. B) Environmental concerns related to mobile phone production解析:根据第四段中提到的“Mobile phone production has been heavily criticized for its negative environmental impact”可以得出答案。
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PAEE MCS-51 模拟试卷(1)
选择题(每题1. 5分,共15分)
模拟电路
1、流电压表测得放大电路中某三极管各管脚电位分别是2V、6V、
2.7V,则三个电极分别是( A )。
(A)(B、C、E) (B)(C、B、E) (C)(E、C、B) (D)(C、E、B)
2、射极放大电路的交流输出波形上半周失真时为( B )失真,下半周失真时为( A )失真。
(A)饱和 (B)截止 (C)交越 (D)频率
注:工作点过高,输入信号大时,就会引起饱和失真。
工作点过低,工作信号大时,就会引起截止失真
3、差分放大电路是为了( C )而设置的。
(A)稳定Au (B)放大信号 (C)抑制零点漂移
4、共模抑制比是差分放大电路的一个主要技术指标,它反映放大电路( A )能力。
(A)放大差模抑制共模 (B)输入电阻高 (C)输出电阻低
数字电路
5、逻辑电路如图⑤,函数式为( A )。
(A) F=+
(B) F=+
(C) F=+C
(D) F=A+B C
6、 2048×8位RAM芯片,其数据线的个数是:( A )。
(A) 11 (B) 8 (C) 14 (D) 211
7、下列逻辑函数表达式中与F=A+B功能相同的是( A )。
(A) (B) (C) (D)
MCS-51
8、通过串行口接收数据时,在程序中应使用( D )。
(A) MOVX A,SBUF (B) MOVC A,SUBF
(C) MOV SUBF,A (D) MOV A,SUBF
9、在多机通讯中,有关第9数据位的说明中,正确的是( B )。
(A) 接收到的第9数据位送SCON寄存器的TB8中保存
(B) 帧发送时使用指令把TB8位的状态送入移位寄存器的第9位
(C) 发送的第9数据位内容在SCON寄存器的RB8中预先准备好
(D) 帧发送时使用指令把TB8位的状态送入发送SBUF中
10、在使用多片DAC0832进行D/A转换,并分时输入数据的应用中,它的两级数据锁存结构可以( B)。
(A) 提高D/A转换速度 (B)保证各模拟电压能同时输出
(C) 提高D/A转换精度 (D)增加可靠性
二、填空题(每空2分,共20分)
模拟电路
1、为了稳定三极管放大电路和静态工作点,采用直流负反馈,为了减小输出电阻采用电压负反馈。
2、乙类互补功放存在交越失真,可以利用乙类互补功放来克服。
数字电路
3、在TTL门电路中,输入端悬空在逻辑上等效于输入高电平。
4、标准TTL门输出高电平典型值是 3.4 伏,低电平典型值是 0.2 伏。
注:TTL输入高电平最小2V,输出高电平最小2.4V,典型值3.4V
TTL输入低电平最大0.8V,输出低电平最大0.4V,典型值0.2V MCS-51
5、8051内部有 4 并行口,P0口直接作输出口时,必须外接上拉电阻。
6、中断处理的全过程分为以下3个段:中断响应 中断处理 中断返回。
三、采用Proteus仿真设计平台,进行电路仿真分析和设计
模拟电路
1、模拟电路分析题(10分)
由理想运放构成的小信号交流放大电路如图示,采用Proteus软件画出电路图,并通过虚拟示波器及仿真图表等工具求出(a)频带内电压放大倍数Auf(取整数)(b)截止频率fL (要求相关测试结果截图)
数字电路
2、数字电路设计(15分)
用译码器实现逻辑函数:
用3线-8线译码器74LS138 和门电路实现,要求在Proteus软件上仿真通过。
MCS-51
3、单片机综合设计(40分)
采用51单片机设计一个信号发生器,要求输出以下任意2种波形
(A矩形波、B锯齿波、C三角波、D正弦波)
请完成如下操作:
(a)在Proteus软件里绘制信号发生器原理图。
(b)要求编写程序实现频率为100Hz的指定波形,每次按下并松开按钮,就可以实现这两种波形间的切换。
(可采用Keil编写或Proteus自带汇编器进行编写,C或汇编都行)
(c)绘制PCB(双面板)。
电源线线宽30th,缩颈默认,过孔V60;一般信号线宽20th,缩颈默认,过孔V40。
(d)覆铜。
顶层接VCC,底层接GND,输出3D预览,截图后保存。
最后输出Gerber文件。