(整理版高中英语)市高中级第一次诊断考试题英语

市高中第一次诊断考试题英语
本试卷分第一卷〔选择题〕和第二卷〔非选择题〕两局部，第一卷1页至9页，第二卷10页。

考试结束后，须将答案答在答题卡上，在本试题卷、草稿纸上答题无效。

总分值150分，考试时间120分钟。

考试结束后，将本试卷和答题卡一并交回。

第一卷〔选择题共100分〕
第一局部英语知识运用〔共两节，总分值50分〕
第一节语法和词汇知识〔共20小题；每题1分，总分值20分〕
从A、B、C、D四个选项中，选出可以填入空白处的最正确选项，并在答题卡上将该项涂黑。

1. With the help of the new teacher, ____number of the students in my class who have made____ great progress in English up to now is far larger.
A. the; the
B. a ; a
C. the ; /
D.
a ; /
2. —Remember not to pretend to know what you don’t know.
— _____. My last lesson is still fresh.
A. No, I will
B. No, I won’t
C. Yes, I won’t
D. Yes, I will
3. Before use, your new mobile must fully____.
A. get charged
B. become charged
C. remain charged
D. turn charged
4. The science of computer,____ rapid progress has been made, is the most important of all.
A. to which
B. from which
C. in which
D. of which
5. I’m sorry I didn’t phone you, but I’ve been very busy_____ the past couple of weeks.
A. beyond
B. with
C. among
D. over
6. A red light will start continuously flashing when the batteries____ low.
A. get
B. will get
C. are getting
D. got
7. Don't blame such a small boy any more. Even the wisest___ make a mistake sometimes.
A. must
B. can
C. should
D. shall
8. More and more rich people have promised to ______ their wealth after death to
help the poor and the disabled.
A. give away
B. give up
C. give out
D. give off
9. _______ his grades with Arnold’s, George was quite satisf ied.
A. Compared
B. To compare
C. Comparing
D. Compare
10. It is the prevention of disease_____ its successful treatment that has led to
the rapid increase of the world’s population.
A. more than
B. rather than
C. other than
D. less than
11. Steve Jobs’death _______ quickly and soon became the talk of the whole world.
A. expressed
B. spread
C. performed
D. whispered
12. One third of the country_____ covered with trees and the majority of the
citizens______ black people.
A. is; are
B. is; is
C. are; are
D. are; is
13. The teacher asked the two students to discuss the question in a low voice______
they should bother the others.
A. so that
B. in case
C. in order that
D. now that
14. Although many measures _____, the world’s economy is still going down.
A. are taken
B. were taken
C. will be taken
D. have been taken
15. Studies show that Americans chat on their phones for more than five hours a month,
_____ Europeans.
A. as much as twice
B. twice as much as
C. as much twice as
D. as twice much as
16. —Which of those electronic dictionaries do you like most?
— .They are expensive and of little use.
A. None
B. Neither
C. All
D. Both
17. ______ by the doctor’s words, he made up his mind to fight against his cancer.
A. Forced
B. Amazed
C. Inspired
D. Ordered
18. Putin will run for president next March in an election that could open the way
for him to stay in ______ for 12 more years.
A. power
B. force
C. energy
D. work
19. —He should have been warned of the danger.
—_______, but he wouldn’t listen to me .
A. So he had
B. So had he
C. So was he
D. So he was
20. Find ways to praise your children often, ____ you’ll find they will open their
hearts to you.
A. till
B. and
C. or
D. but
第二节完形填空〔共20小题，每题分，总分值30分〕
阅读下面短文，掌握其大意，然后从21—40各题所给的四个选项〔A、B、C和D〕中，选出可以填入空白处的最正确选项，并在答题卡上涂黑。

At Priya's wedding party, her mother gave her a newly opened bankbook and said, "Priya, keep it as a 21 of your marriage life. When something 22 happens, put some money in and give a brief 23 to it next to the line. The happier the
event is, the more money you can put in. When 24 after years, you will know how much happiness you've 25 ".
Priya and Hitesh both thought it a great idea and soon made the first deposit(储蓄). 26 , after years, they started quarrelling and fighting. They both 27 marrying the worst person in the world.
One day Priya talked to her mother, "Mom, we can't 28 it any more. We decided to get divorce! I can't imagine 29 I decided to marry this Guy!!!" Her mother responded, "Just do whatever you want, but before that do one thing first.
30 the bankbook I gave to you on your wedding party? Take out all the money and
31 it first. You shouldn't keep any record of such a 32 marriage. "Priya thought
it was 33 . So she went to the bank, 34 to draw out all the money. While waiting
in the queue, she took out the bankbook and recalled the memories of all the previous 35 . Her eyes filled with tears, she left in a (an) 36 . When she returned home, she handed the bankbook to Hitesh, asking him to spend the money.
The next day, Hitesh gave the bankbook back to Priya. 37 , she found a new deposit of $5000, with a line next to the record:" This is the day I 38 how much I've loved you. How much happiness you've brought me." Much 39 , they hugged and cried, putting the bankbook back to their 40 .
21. A. record B. respect C. remark D. guide
22. A. uncertain B. unexpected C. pleasant D. annoying
23. A. arrangement B. comment C. promise D. dream
24. A. taking up B. looking out C. taking in D. looking back
25. A. harvested B. bought C. offered D. wanted
26. A. Besides B. Anyway C. Instead D. However
27. A. enjoyed B. risked C. regretted D. stopped
28. A. help B. stand C. blame D.
defeat
29. A. what B. where C. why D. when
30. A. Return B. Lose C. Check D. Remember
31. A. devote B. spend C. lend D. waste
32. A. happy B. poor. C. simple D. tranditional
33. A. reasonable B. faithful C. hopeful D. responsible
34. A. planning B. pretending C. hesitating D. preferring
35. A. trouble B. experiences C. quarrels D. happiness
36. A. panic B. ease C. hurry D. while
37. A. Interestingly B. Naturally C. disappointingly
D. Surprisingly
38. A. admit B. search C. realise D. declare
39. A. attracted B. tired C. puzzled D. moved
40. A. safe B. mother C. bank D. wedding
第二局部阅读理解〔共两节，总分值50分〕
第一节阅读下面的短文，从每题所给的四个选项(A、B、C和D)中，选出最正确选项，并在答题卡上将该项涂黑。

〔共20小题；每题2分，总分值40分〕
A
As you grow older, you’ll be faced with some challenging decisions—like whether to cut class or try cigarettes. Making decisions on your own is hard enough, but when other people get involved and try to pressure you one way or another it can be even harder. People who are your age, like your classmates, are called peers. When they try to influence how you act, to get you to do something, it’s called peer pressure.
Peers can have a positive influence on each other. Maybe another student in your science class taught you an easy way to remember the planets in the solar system. Maybe you got others excited about your new favorite book, and now everyone’s reading it. These are examples of how peers positively influence each other.
Sometimes peers influence each other in negative ways. For example, a few kids in school might try to get you to cut class with them; your soccer friend might try to convince you to be mean to another player and never pass him the ball.
It is tough to be the only one who says “no〞 to peer pressure, but you can do it. Paying attention to your own feelings and beliefs about what is right and wrong can help you know the right thing to do.
You’ve probably had a parent or teacher advising you to “choose your friends wisely.〞 Peer pressure is a big reason why they say this. If you choose friends who don’t cut class, smoke cigarettes, or lie to their parents, then you probably won’t do these things either, even if other kids do.
If you continue to face peer pressure and you’re finding it difficult to handle, talk to someone you trust. Don’t feel guilty if you’ve made a mistake or two.
41. For whom is the passage most probably written?
A. Students.
B. Parents.
C. Teachers.
D. Doctors.
42. In the last three paragraphs, the author mainly_____.
A. explains why friendship is so important
B. gives advice on how to deal with peer pressure
C. discusses how peers influence us
D. shows how to make more good friends
43. Which of following may help handle peer pressure?
A. Spending more time with classmates.
B. Taking up more relaxing hobbies.
C. Choosing friends with no bad habits.
D. Helping others who are in trouble.
44. What is the topic of the passage?
A. Friendship.
B. Making decisions
C. Self-confidence
D. Peer pressure
B
From the first use of the rocket to carry satellites into space to the setting up of space stations, human beings have been putting great effort into space research. And so far, we have achieved many successes. But there are still numerous tasks in front of us and we should not stop trying to progress.
The international space station (ISS) is an important step we should take in space exploration. It is not only helpful but also essential. It provides a proper space environment for many experiments that we have wanted to do for a long time. It is also a base for the observations of the earth and the universe. It could also be an important base for later travel to the moon and Mars. In a word, if we want to explore space more, the first thing we should do is to set up a space station.
As the space station costs a lot of money, it is hard for one country alone to establish one. The USA seems to be the only country that has the ability to build a space station alone，and it has tried to do so, but not very successful. So it aggregated many other countries to work on it together. Though it is still extremely expensive, it is much cheaper than doing it alone. It is really a job that needs everyone’s effort and will benefit everyone.
Led by the U.S. and Russia, the ISS is a joint project between six space agencies involving 16 countries. Called the greatest achievement in human cooperation, the ISS has come to the end of a ten-year’s hard work in construction. China has applied for participation in (taking part in) the project many times. Unfortunately all the applications were rejected, which drove China onto the path of independent development. As the Long March Ⅱ-F/T1 carrier rocket blasted off (leave the ground) and successfully carried the Tiangong-1 into space on September 29, , China takes a big step toward its Space Station Era.
Some West media suggested that the successful launch of Tiangong-1 would disturb the balance of global space power, raising concerns (关注) about “China threat〞. China’s space project is not designed for military (军事的) purpose but for developing space technology to explore space resources and make use of them for mankind’s well-being.
45. From Paragraph 2 we learn that ________.
A. the necessity of building the international space station is not realized now
B. many experiments have been done in the international space station
C. the international space station is necessary for people to explore space more
D. people have traveled to Mars from the international space station
46. Which of the following is NOT a reason for countries’ cooperation in building
the international space station?
A. That it requires a lot of money.
B. That it needs everyone’s effort.
C. That it will benefit every participating country.
D. That it is too far away from the earth.
47.The underlined word “aggregated〞in Paragraph 3 can be replaced by “________〞．
A. united
B. scolded
C. allowed
D. forbade
48. China wants to build its space station in order to __________.
A. break the balance of global space power
B. show that China can build space station alone
C. raise international concerns about “China threat〞
D. make use of space peacefully for mankind’s well-being
C
“In only six days I lost seven pounds of weight.〞
“Two full inches in t he first three days!〞
These are the kinds of statements used in magazine, newspaper, radio and television ads, promising good shapes and new looks to those who buy the medicine or the device. The promoters of products say they can shape the legs, slim the face, smooth wrinkles, or in some other way add to beauty or desirability.
Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.
To understand how these products can be legally promoted to the public, it is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA (Food Drug Administration) can require proof under the Food, Drug and Cosmetic Act that it is safe and effective before it is put on the market. But if the product is a device, FDA has no authority to require premarketing proof of safety or effectiveness. If a product already on the market is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action, including seizure (查封) of the product.
One notable case a few years ago involved an electrical device called the Relaxacisor, which had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds that was dangerous to health and life.
Obviously, most of the devices on the market have never been the subject of court proceedings (法律诉讼), and new devices appear continually, Before buying, it is up to the consumer to judge the safety or effectiveness of such items.
49. It can be inferred that ads mentioned in the text are_____.
A. objective
B. costly
C. unbelievable
D. illegal
50. The Relaxacisor is mentioned as______.
A. a product which was designed to produce electricity
B. a product whose distributor was involved in a legal case
C. a successful advertisement of a beauty product
D. an example of a quality beauty product
51. The author intends to______.
A. make consumers aware of the promoters’ false promise
B. show the weakness of the law on product safety
C. give advice on how to keep young and beautiful
D. introduce the organization of FDA
52. Which of the following is true according to the text?
A. The court is in charge of removing dangerous products.
B. New products are more likely to be questionable.
C. The production of a device must be approved by FDA.
D. The promoters usually just care about profits.
D
To get an extra 14 years of life, don't smoke, eat lots of fruits and vegetables, exercise regularly and drink alcohol in a proper amount．That is according to a study published this Monday in the Public Library of Science Medicine Journal．After tracking more than 20,000 people aged 45 to 79 years in the United Kingdom from about 1993 to , Kay-Tee Khaw of the University of Cambridge and his colleagues found that people who adopted these four healthy habits lived all average of 14 years longer than those who didn't．
“We've known for a long time that these behaviors are good things to do, but we've not seen this benefit before, 〞 said Susan Jebb, head of Nutrition and Health at Britain's Medical Research Council．“The benefit was also seen regardless of whether or not people were fat and what social class they came from．〞Study participants〔参与者〕scored a point each for not smoking, regular physical activity, eating five servings of fruits and vegetables a day and moderate alcohol intake．
Public health experts said they hoped the study would inspire governments to introduce policies helping people to adopt these changes．But because the study only observed people rather than testing specific changes, it would be impossible to conclude that people who suddenly adopted these healthy behaviors would surely gain 14 years．
“We can't say that any person could gain 14 years by doing these things, 〞said Dr．Tim Armstrong, a physical activity expert at the World Health Organization．“The 14 years is an average across the population of what's theoretically〔理论上地〕possible．〞
“Most people know that things like a good diet matter and that smoking isn't
good for them, 〞 Susan Jebb said．“We need to work on providing people with much more practical support to help them change．〞
53. Which of the following DOESN'T belong to the four healthy habits?
A. Eat five servings of fruits and vegetables a day．
B. Do proper exercise in the morning every day．
C. Drinking alcohol in the proper amount every day．
D. Having a cigarette before going to bed every day．
54.We can learn from the passage that ．
A. Susan Jebb did not take part in the study．
B. the study observed people as well as tested specific changes．
C. there's no need for people under 45 to adopt these good habits．
D. only those from first class can benefit from these healthy behaviors．
55. What can be inferred from the passage?
A. All the people are well aware of the harm of their bad habits．
B. People aged 45 to 70 have bad habits in the United Kingdom．
C. Governments should take measures to help people change their bad habits．
D. People have adopted the four healthy habits after knowing they're good．
56. What would be the best title for this passage?
A. Smoking and Drinking Cuts You 14 Years
B. How to Live a Much Healthier Life
C. How to Make Your Life Longer Than Others
D. Healthy Habits May Give Extra 14 Years
E
Drunken driving—sometimes called America’s socially accepted form of murder —has become a national epidemic〔流行病〕. Every hour of every day about three Americans on average are killed by drunken drivers, adding up to an incredible 250,000 over the past ten years. A drunken driver is usually referred to as one with 0.10-blood alcohol content or roughly three beer glasses of wine or shots of whisky drunk within two hours. Heavy drinking used to be an acceptable part of the American manly image and judges were lenient in most courts, but the drunken killing has recently caused so many well-publicized tragedies, especially concerning young children, that public opinion is no longer so tolerant〔忍受〕.
Twenty states have raised the legal drinking age to 21, reversing a trend〔逆转潮流〕in the 1960s to reduce it to 18. After New Jersey lowered it to 18, the number of people killed by 18—20-year-old drivers more than doubled, so the state recently upped it back to 21.
Reformers, however, fear raising the drinking age will have little effect unless accompanied by educational programs to help young people to develop “responsible
attitudes〞 about drinking and teach them to resist peer pressure to drink.
Though new laws have led to increased arrests and tests in many areas already, to a marked drop in accidents, some states are also punishing bars for serving customers too many drinks. A bar in Massachusetts was fined for serving six or more double brandies to a customer who was “obviously drunk〞 and later drove off the road, killing a nine-year-old boy.
As the accidents continue to occur daily in every state, some Americans are even beginning to speak well of the 13 years national prohibition〔禁令〕of alcohol that began in 1919, which President Hoover called the “noble experiment〞. They forgot that legal prohibition didn’t stop drinking, but encouraged political corruption〔腐败〕and organized crime. As with the booming drug trade generally, there is no easy solution.
57. What can be inferred from the fact of the traffic accidents in New Jersey?
A. Young drivers were usually bad.
B. The legal drinking age should be raised.
C. Some drivers didn’t surprise the legal drinking age.
D. Drivers should not be allowed to drink.
58. The underlined word “lenient〞 in the first paragraph means .
A. merciful
B. cruel
C. serious
D. determined
59. As regards drunken driving, public opinion has changed because .
A. judges are no longer lenient
B. new laws are introduced in some states
C. drivers do not appreciate their manly image
D. the problem has attracted public attention
60. Which of the following statements best shows the writer’s opinion of drunken driving?
A. It is difficult to solve this problem.
B. It may lead to organized crime.
C. The new laws can stop heavy drinking
D. There should be no bars to serve drinks.
第二节根据对话内容，从对话后的选项中选出能填入空白处的最正确选项，并在答题卡上将该项涂黑。

选项中有两项多余选项。

〔共5小题：每题2分，总分值10分〕
Doctor: Can I help you?
Patient: Yes, 61
Doctor: What’s the matter with it?
Patient: Oh, it’s terrible! I was burnt in a fire caused by smoking.
Doctor: 62
Patient: Oh, nothing. I didn’t know what to do.
Doctor: OK, Put it higher. Let me examine it and put some medicine on it. Patient: Ah, I feel a great pain here. Would you mind me lying down?
Doctor: Of course not. 63
Patient: But I feel so bad.
Doctor: Just stay in bed until next Friday. Don’t move a bit.
Patient: 64
Doctor: No, you can’t do that. Take this medicine three times a day. Patient: Oh, it’s terrible! Terrible! I hate it!
第二卷〔非选择题共50分〕
第三局部：写作〔共两节，总分值50分〕
第一节短文改错〔共10小题；每题分，总分值15分〕
此题要求改正所给短文中错误。

对标有题号的每一行做出判断：如无错误，在该行右边横线上画一个“√〞；如有错误〔每行只有一个错误〕，那么按以下情况改正：该行多一个词：把多余的词用斜线〔╲〕划掉，在该行右边横线上写出该词，并也用斜线划掉。

该行缺一个词：在缺词处加一个漏字符号〔∧〕，在该行右边横线上写出该加的词。

该行错一个词：在错的词下划一横线。

在该行右边横线上写出改正后的词。

注意：原行没有错的不要改。

The teacher was handing out test papers when I walk into 66.
___________
the classroom. I was feeling nervously because I had not 67.
___________
prepared well for the exam. I went through the test several time, 68. ___________
but I still could answer the questions. Being afraid of failing the 69. ___________
exam, I put my book under the desk, opened it and started 70.
___________
looking for the answers. The teacher wasn’t looking at for me, 71.
___________
so I copied nothing. Suddenly I felt a hand on my shoulder! 72.
___________
The teacher caught me cheat. I felt too ashamed of myself 73.
___________
to say anything. Unfortunately, the teacher didn’t punish 74.
___________
me for cheating. Instead, he gave me the second chance. 75.
___________
第二节书面表达(总分值35分)
许多学习生活中的烦恼都会使人产生压力,为了更好地发现及解决同学们中存在的心理
压力问题,你们班特意开展了一次以"Less Pressure, Better Life"为主题的英语演讲比赛,
请你准备发言稿,谈谈你的一些缓解压力的好方法,与同学分享,内容包括:
●同学们中普遍存在的压力：学习很努力，成绩不理想；作业太多没时间玩。

●我的压力：成绩好但与同学相处有困难；与父母缺乏沟通(communicate with…)。

●缓解压力的方法：至少两项。

注意: 1、
2、字数：100字左右。

格式已为你写好，但不计入总词数。

3、可适当增加细节，使行文连贯，不要逐条翻译。

Less Pressure, Better Life
Hello, boys and girls!
Pressure is a serious problem in today’s world. Students in our class are under
too much pressure.
That’s all. Thank you!
市高中第一次诊断考试题
英语参考答案及评分意见
第一卷〔共100分〕
第一局部
第一节：单项填空〔共20小题；每题1分，总分值20分〕
1—5. CDACD 6—10. CBACB 11—15. BABDB 16—20. ACADB
第二节：完形填空〔共20小题，总分值30分〕
21—25. ACBDA 26—30. DCBCD 31—35.BBAAD 36—40. CDCDA
第二局部
第一节：阅读理解〔共20小题；每题2分，总分值40分〕
41—45. ABCDC 46—50. DADCB 51—55. ADDAC 56—60. DBADA
第二节：补全对话〔共5小题；每题2分，总分值10分)
61—65. DFGCA
第二卷〔共50分〕
第三局部
第一节：短文改错〔共10小题；每题1.5分，总分值15分〕
66. walk→walked 67. nervously→nervous 68. time→times 69.
could后加not
70. √ 71. 去for 72. nothing→something 73. cheat→cheating
74. Unfortunately→→a
第二节：书面表达〔35分〕
Possible version
Less Pressure, Better Life
Hello, boys and girls!
Pressure is a serious problem in today’s world. Students in our class are under too much pressure. Some students study very hard but they are still poor in their studies. They often worry about their exams. Others think they have so much homework to do that they have no time to play.
I’m always under pressure, too.I’m good at every subject, but it’s hard for me to get on well with my classmates. I hardly communicate with my parents, too.
I really feel tired sometimes.
But how to solve the problem? I think a conversation with parents or teachers is helpful and taking exercise can make us relaxed when we’re under pressure.
That’s all. Thank you!
书面表达评分细那么
一、评分原那么
1、此题总分为35分，按5个档次给分。

2、评分时，先根据文章的内容和语言初步确定其所属档次，然后以该档次的要求来衡量，
确定或调整档次，最后给分。

3、词数少于80或多于120的，从总分中减去2分。

4、评分时应注意的主要内容为：内容要点，应用词汇和语法结构的数量和准确性及上下文
的连贯性。

5、拼写与标点符号是语言准确性的一个方面。

评分时，应视其对交际的影响程度予以考虑。

英，美拼写及词汇用法均可接受。

6、如书写较差以至影响交际，将其分数降低一个档次。

二、内容要点
1. 学习很努力，成绩不理想；
2. 作业太多没时间玩；
3. 我的压力；
4. 缓解压力方法一；
5. 缓解压力方法二。

三、各档次的给分范围和要求
第五档：〔29—35分〕
完全完成了试题规定的任务。

—覆盖所有内容的要点。

—应用了较多的语法结构和词汇。

—语法结构或词汇方面有些许错误，但为尽力使用较复杂结构或较高级词汇所致。

—有效地使用了语句间的连接成分，使全文结构紧凑。

完全到达了预期的写作目的。

第四档：〔22—28分〕
完成了试题规定的任务。

—虽漏掉一两个次重点，但覆盖所有主要内容。

—应用的语法结构和词汇能满足任务的要求。

—语法结构或词汇方面应用根本准确，些许错误主要是因尝试较复杂语法结构或词汇所致。

—应用简单的语句间的连接成分，使全文结构紧凑。

到达了预期的写作目的。

第三档：〔15—21分〕
根本完成了试题规定的任务。

—虽漏掉一些内容，但覆盖所有主要内容。

—应用的语法结构和词汇能满足任务的要求。

—有一些语法结构或词汇方面的错误，但不影响理解。

—应用简单的语句间连接成分，使全文内容连贯。

整体而言，根本到达了预期的写作目的。

第二档：〔8—14分〕
未恰当完成试题规定的任务。

—漏掉或未描述清楚一些主要内容，写了一些无关内容。

—语法结构单调，词汇知识有限。

—有一些语法结构或词汇方面的错误，影响了对写作内容的理解。

—较少使用语句间的连接成分，内容缺少连贯性。

信息未能清楚地传达给读者。

第一档：〔1—7分〕
未完成试题规定的任务。

—明显遗漏主要内容，写了一些无关内容，原因可能是未理解试题要求。

—语法结构单调，词汇知识有限。

—较多语法结构或词汇方面的错误，影响对写作内容的理解。

—缺乏语句间的连接成分，内容不连贯。

信息未能传达给读者。

0分
未能传达给读者任何休息：内容太少，无法评判；写的内容均与所要求内容无关或所写内容无法看清。

说明
1、内容要点可用不同方式表达。

2、应紧扣主题，可适当得体发挥。

为了操作方便，按表达要点的多少和使用语言的情况，划分为五个档次，列表说明如下：
注意：
1.原那么上应按照考生所表达的要点数归档。

如语言错误多，可降一档，如语言表达较
好，可打该档最高分或上升一档。

2.在同一档次内，根据语言错误的多少确定五个分值。

1—2个错误，取该档次分值的高线(如第五档35—33分)。

3—4个错误，取该档次分值的中线(如第五档32—31分)。

5个错误，取该档次分值的低线(如第五档30—29分)。

6个以上降一档取高线(如第五档降至第四档高线28—26分)，10个左右错误取其
降档后的低线如第五档降至第四档高线23—22分)。