课时作业4 Unit2 SectionⅡ ReadingandThinking

课时作业4 Unit2 SectionⅡ
ReadingandThinking
Ⅰ.单句语法填空
1．At present a public bicycle is rented and returned four time s a day ________ average.
2．I was very ________ to hear the ________ news that anoth er earthquake had hit his hometown.(alarm)
3．To achieve harmony between humans and animals, the w orld must protect these beautiful ________.(creature)．4．This book ________ (intend) for beginners, and is now very popular in .
5．Nature reserves have protected many ________ (endanger ) animals from dying out.
6．He had his bad tooth ________ (remove) yesterday, so he can't eat anything today.
7．People ________ (remind) that no smoking is allowed in th ese patient rooms.
8．What's more, something should be done to raise people's ________ (aware) of protecting animals.
9．That's ________ I think the trip along the Yangtze River is a better choice.
10．As is known to us, the People's Republic of came into __ ______ (exist) as an independent country in 1949.
Ⅱ.阅读理解
A
Animal Conservation
Many animal and plant species have become extinct and man y more are in great danger. Finding ways to protect the earth' s wildlife and conserve (保
护) the natural world is now more important than ever.
The Dodo
The dodo is a classic example of how human caused damage to the earth's creatures. The flightless dodo was native to the Island of Mauritius in the Indian Ocean. It lived on fruits fallen from the island's trees and lived freely until humans arrived in 1505. The easily controlled bird became a source of food for sailors and was attacked by animals introduced to the island b y humans such as pigs, monkeys and rats. The population of dodos rapidly decreased and the last one was killed in 1681.
Rhinos
The rhino horn is a highly prized item for Asian medicine. This has led to the animal being hunted in its natural habitat. Once widespread in Africa and Eurasia, most rhinos now live in pro tected nature parks and reserves. Their number has rapidly d ecreased in the last 50 years, and rhinos are still under const ant threat from poachers (偷猎者)．
The Giant Panda
The future of the World Wild Fund For Nature's symbol is far f rom certain. Only a few exist in the wild. The Chinese govern ment has set up panda reserves to protect these beautiful ani mals and made the crime of poaching them punishable with 2 0 years in prison. However, the panda's fur is sold at a high pr ice in the black market and poachers are one of the most seri ous threats to the animal's existence.
Tigers
The last 100 years has seen a 95% decrease in the number o f remaining tigers to between 5,000 and 7,000 and the Bali, J avan, and Caspian tigers are already extinct. The South Chin a tiger is close to disappearing. Like the rhino horn, tigers' bo nes and organs are sought after (寻
找) for traditional Chinese medicines. These items are traded i llegally along with tiger skins.
1．What can we learn from the text?
A．The dodo lacked the ability to protect itself from other ani mals.
B．Sailors to the of lived mainly on the dodo.
C．The dodo used to be a strong animal that liked fighting. D．The dodo, pigs, monkeys and rats were the natives to the of .
2．Which group of the following animals has already become extinct according to the text?
A．The dodo, rhino and the Giant Panda.
B．The rhino, dodo and the South China tiger.
C．The rhino, panda and tiger.
D．The dodo and the Bali, Javan, and Caspian tigers. 3．What can serve as a cure for certain diseases?
A．The rhino's bones.
B．The panda's fur.
C．The tigers' bones and organs.
D．The dodo's delicious meat.
4．Which of the following statements is true?
A．The number of South China tigers has not reached crisis point.
B．Many animals are threatened with extinction as a result of weather change.
C．People hunt for the endangered animals for eating. D．The panda is the representing image for the World Wild F und For Nature.
B
What do you usually do when a flying insect lands on your ar m? Most likely you blow it away. But what if that bug were a la dybug (瓢
虫)? Then chances are you would let it stay. What is it about l adybugs that we like?
Farmers once thought ladybugs were a good luck sign. A lady bug in the field meant that the crops (庄
稼) would be successful and the weather would be good. The farmers may have been exaggerating (夸
大) about what a very small bug can do, but in fact ladybugs d o help out with the crops. They eat harmful insects. Actually, it is not the adult ladybug that eats the other insects. It's the ladybug larvae (幼
虫). Ladybugs lay their eggs on leaves that are covered with a phids or other insects. When the larvae come out of the eggs, they are very hungry and will eat mites, aphids, mealybugs, g reen flies, and other cropdestroyers.
A single ladybug larva can eat over 1,000 aphids in one day. I n the 1800s, ladybugs were brought all the way from Australia to and set free among orange trees that were dying from bei ng eaten by insects. The little red and black “eating machines” completely saved all the trees.
Ladybugs go about their daily business without worrying muc h about anything. Very few birds or insects will eat a ladybug because it gives off something that is dangerous to eat. Ladyb ugs also protect themselves by playing dead.They fall off leav es and remain very still until their enemy goes away.
So next time you see a ladybug, think about what it may be u p to. Maybe it is off to save an orange tree. Maybe its next mo ve will be to fall off a leaf and play dead or stand_up_to a bird about 100 times its size. Maybe it's letting you know that the weather will be good tomorrow. Who knows? Ladybugs are s pecial that way.
5．What do we know about mites and aphids?
A．They do harm to the crops.
B．They eat more than they should.
C．They are food for adult ladybugs.
D．They are the enemy of ladybug larvae.
6．Why were ladybugs brought from Australia to in the 1800
s?
A．To report the weather for farmers.
B．To increase their number.
C．To do research on them.
D．To save orange trees.
7．What does the underlined part “stand up to” in the last par agraph probably mean?
A．Play with. B．Worry about.
C．Get along with. D．Fight back against.
8．What does the author think of the ladybug?
A．It is a cropdestroyer.
B．It is a good luck sign.
C．It is a little flying helper.
D．It is a big eating machine.
Ⅲ.阅读七选五
For many, running has never been their favorite activity. But r unning can certainly be a great way to get fit and stay healthy. Getting started is difficult. __1__ Running can be boring at tim es, but the effect on your body and mind is well worth that stru ggle of just getting up and running.
__2__ Every major city and many smaller cities have running
communities. They are quite organized and willing to help. Th ey will help you see your running goals through.
Start with short distances. Though the running community wo uld love to have a new longdistance runner tomorrow, the fact is that that will not happen overnight. Try running one mile ev ery day for the next 3 weeks. After that, add it to two miles an d so on. __3__
Take part in a race. By signing up for a race in the near future , you will focus on a goal and be motivated (激
励) to keep practicing for that event. I suggest signing up for a 5kilometer race that will take place within one month. __4__ __5__ Motivation is a major factor in running success. A friend helps to push you through the times and motivate you in his o wn way.
A．Join a group.
B．One step at a time.
C．Bring a friend along.
D．Most of you will have no problem finding a great race. E．Shorter distances are a step to longer and more successf ul runs.
F．There are so many activities people would rather be doing than running.
G．You will get the chance to see the seasonal change and b reathe in fresh air.
课时作业4
Ⅰ.单句语法填空
1．on 2.alarmed alarming 3.creatures 4.is intended 5．endangered 6.removed 7.are reminded 8.awareness 9．why 10.existence
Ⅱ.阅读理解
A
【语篇解读】这是一篇说明文。

文章介绍了四种比较典型的已经灭绝的和濒临灭绝的动物。

文章对于每一种动物的数量、所处的危险以及危险产生的原因等方面进行了介绍，使读者感受到保护珍稀动物的紧迫性。

1．答案与解析：A 推理判断题。

根据The Dodo部分中的“flightless”“lived on fruits fallen from the island's trees”和“The easily controlled bird”等可推测出，渡渡鸟缺少保护自己
的能力。

2．答案与解析：D 细节理解题。

根据The Dodo部分中的“The population of dodos rapidly decreased and the last one was killed in 1681”可判断，渡渡鸟已经灭绝了，再根据Tigers 部分中的“the Bali，Javan，
and Caspian tigers are already extinct”可知，这三种老虎已经灭绝。

3．答案与解析：C 细节理解题。

根据Rhinos部分中的“The rhino horn is a highly prized item for Asian medicine”和Tigers部分中的
“Like the rhino horn, tigers' bones and organs are sought after (寻找)for traditional Chinese medicines”可知，犀牛角和老虎的骨头及器官都有很高的药用价值。

4．答案与解析：D 推理判断题。

根据The Giant Panda部分中的
“The future of the World Wild Fund For Nature's symbol is far from certain”可知，“世界自然基金会”的形象代表是大熊猫。

B
【读篇解读】本文是说明文。

文章是对瓢虫的介绍。

5．答案与解析：A 推理判断题。

由第三段中的
“mites, aphids, mealybugs, green flies, and other cropdestroy ers”可知，这些都是对庄稼有害的虫子。

6．答案与解析：D 细节理解题。

由第四段中的“ladybugs... set free among orange trees that were dying from being eaten by insects”可知，十九世纪瓢虫被从澳大利亚带到加利福尼亚州是为了挽救被害虫侵害的橘子树。

7．答案与解析：D 词义猜测题。

由倒数第二段中的
“Very few birds or insects will eat a ladybug because it gives o ff something that is dangerous to eat.”可知，很少有鸟或昆虫吃瓢虫。

再由画线部分后的“a bird about 100 times its size”可知，当遇见比它大的鸟时，瓢虫会释放某种物质从而对鸟造成威胁。

故此处的stand up to有“回击、抵御”之意。

8．答案与解析：C 推理判断题。

本文旨在介绍瓢虫这种能够吃害虫的昆虫，它们对于庄稼来说是得力的帮手，故C项中的helper最符合瓢虫的这一特性。

Ⅲ.阅读七选五
【语篇解读】文章介绍了如何养成跑步的习惯。

1．答案与解析：F 根据空后的
“Running can be boring at times”可知，此处应选F项“人们愿意去做很多活动，除了跑步以外”与此形成对应。

2．答案与解析：A 下一句中的“running communities”说明，此处建议加入跑步团体。

故选A。

3．答案与解析：E 此句是本段的总结句，E项中的
Shorter distances与第一句中的short distances相呼应。

4．答案与解析：D 由本段主旨句可知，本段主要参加跑步比赛，D项中的race和空前提到的race相呼应。

5．答案与解析：C 由下文中的
“A friend helps to push you through the times”可知，C项正确。

课时作业4 Unit2 SectionⅡ
ReadingandThinking
Ⅰ.单句语法填空
1．At present a public bicycle is rented and returned four times a day ________ average. 2．I was very ________ to hear the ________ news that another earthquake had hit his homet own.(alarm)
3．To achieve harmony between humans and animals, the world must protect these beautifu l ________.(creature)．
4．This book ________ (intend) for beginners, and is now very popular in .
5．Nature reserves have protected many ________ (endanger) animals from dying out. 6．He had his bad tooth ________ (remove) yesterday, so he can't eat anything today. 7．People ________ (remind) that no smoking is allowed in these patient rooms.
8．What's more, something should be done to raise people's ________ (aware) of protecting animals.
9．That's ________ I think the trip along the Yangtze River is a better choice.
10．As is known to us, the People's Republic of came into ________ (exist) as an independe nt country in 1949.
Ⅱ.阅读理解
A
Animal Conservation
Many animal and plant species have become extinct and many more are in great danger. Fin ding ways to protect the earth's wildlife and conserve (保
护) the natural world is now more important than ever.
The Dodo
The dodo is a classic example of how human caused damage to the earth's creatures. The fli ghtless dodo was native to the Island of Mauritius in the Indian Ocean. It lived on fruits fallen from the island's trees and lived freely until humans arrived in 1505. The easily controlled bir d became a source of food for sailors and was attacked by animals introduced to the island b y humans such as pigs, monkeys and rats. The population of dodos rapidly decreased and th e last one was killed in 1681.
Rhinos
The rhino horn is a highly prized item for Asian medicine. This has led to the animal being hu nted in its natural habitat. Once widespread in Africa and Eurasia, most rhinos now live in pro tected nature parks and reserves. Their number has rapidly decreased in the last 50 years, a nd rhinos are still under constant threat from poachers (偷猎者)．
The Giant Panda
The future of the World Wild Fund For Nature's symbol is far from certain. Only a few exist in the wild. The Chinese government has set up panda reserves to protect these beautiful anim als and made the crime of poaching them punishable with 20 years in prison. However, the p anda's fur is sold at a high price in the black market and poachers are one of the most seriou s threats to the animal's existence.
Tigers
The last 100 years has seen a 95% decrease in the number of remaining tigers to between 5 ,000 and 7,000 and the Bali, Javan, and Caspian tigers are already extinct. The South China tiger is close to disappearing. Like the rhino horn, tigers' bones and organs are sought after (寻
找) for traditional Chinese medicines. These items are traded illegally along with tiger skins. 1．What can we learn from the text?
A．The dodo lacked the ability to protect itself from other animals.
B．Sailors to the of lived mainly on the dodo.
C．The dodo used to be a strong animal that liked fighting.
D．The dodo, pigs, monkeys and rats were the natives to the of .
2．Which group of the following animals has already become extinct according to the text? A．The dodo, rhino and the Giant Panda.
B．The rhino, dodo and the South China tiger.
C．The rhino, panda and tiger.
D．The dodo and the Bali, Javan, and Caspian tigers.
3．What can serve as a cure for certain diseases?
A．The rhino's bones.
B．The panda's fur.
C．The tigers' bones and organs.
D．The dodo's delicious meat.
4．Which of the following statements is true?
A．The number of South China tigers has not reached crisis point.
B．Many animals are threatened with extinction as a result of weather change.
C．People hunt for the endangered animals for eating.
D．The panda is the representing image for the World Wild Fund For Nature.
B
What do you usually do when a flying insect lands on your arm? Most likely you blow it away. But what if that bug were a ladybug (瓢
虫)? Then chances are you would let it stay. What is it about ladybugs that we like? Farmers once thought ladybugs were a good luck sign. A ladybug in the field meant that the crops (庄
稼) would be successful and the weather would be good. The farmers may have been exagg erating (夸
大) about what a very small bug can do, but in fact ladybugs do help out with the crops. They
eat harmful insects.
Actually, it is not the adult ladybug that eats the other insects. It's the ladybug larvae (幼虫). Ladybugs lay their eggs on leaves that are covered with aphids or other insects. When th e larvae come out of the eggs, they are very hungry and will eat mites, aphids, mealybugs, gr een flies, and other cropdestroyers.
A single ladybug larva can eat over 1,000 aphids in one day. In the 1800s, ladybugs were br ought all the way from Australia to and set free among orange trees that were dying from bei ng eaten by insects. The little red and black “eating machines” completely saved all the trees. Ladybugs go about their daily business without worrying much about anything. Very few bird s or insects will eat a ladybug because it gives off something that is dangerous to eat. Ladyb ugs also protect themselves by playing dead.They fall off leaves and remain very still until th eir enemy goes away.
So next time you see a ladybug, think about what it may be up to. Maybe it is off to save an o range tree. Maybe its next move will be to fall off a leaf and play dead or stand_up_to a bird a bout 100 times its size. Maybe it's letting you know that the weather will be good tomorrow. Who knows? Ladybugs are special that way.
5．What do we know about mites and aphids?
A．They do harm to the crops.
B．They eat more than they should.
C．They are food for adult ladybugs.
D．They are the enemy of ladybug larvae.
6．Why were ladybugs brought from Australia to in the 1800s?
A．To report the weather for farmers.
B．To increase their number.
C．To do research on them.
D．To save orange trees.
7．What does the underlined part “stand up to” in the last paragraph probably mean? A．Play with. B．Worry about.
C．Get along with. D．Fight back against.
8．What does the author think of the ladybug?
A．It is a cropdestroyer.
B．It is a good luck sign.
C．It is a little flying helper.
D．It is a big eating machine.
Ⅲ.阅读七选五
For many, running has never been their favorite activity. But running can certainly be a great way to get fit and stay healthy.
Getting started is difficult. __1__ Running can be boring at times, but the effect on your body and mind is well worth that struggle of just getting up and running.
__2__ Every major city and many smaller cities have running communities. They are quite or ganized and willing to help. They will help you see your running goals through.
Start with short distances. Though the running community would love to have a new longdist ance runner tomorrow, the fact is that that will not happen overnight. Try running one mile ev ery day for the next 3 weeks. After that, add it to two miles and so on. __3__
Take part in a race. By signing up for a race in the near future, you will focus on a goal and b e motivated (激
励) to keep practicing for that event. I suggest signing up for a 5kilometer race that will take p lace within one month. __4__
__5__ Motivation is a major factor in running success. A friend helps to push you through the times and motivate you in his own way.
A．Join a group.
B．One step at a time.
C．Bring a friend along.
D．Most of you will have no problem finding a great race.
E．Shorter distances are a step to longer and more successful runs.
F．There are so many activities people would rather be doing than running.
G．You will get the chance to see the seasonal change and breathe in fresh air.
课时作业4
Ⅰ.单句语法填空
1．on 2.alarmed alarming 3.creatures 4.is intended
5．endangered 6.removed 7.are reminded 8.awareness
9．why 10.existence
Ⅱ.阅读理解
A
【语篇解读】这是一篇说明文。

文章介绍了四种比较典型的已经灭绝的和濒临灭绝的动物。

文章对于每一种动物的数量、所处的危险以及危险产生的原因等方面进行了介绍，使读者感受到保护珍稀动物的紧迫性。

1．答案与解析：A 推理判断题。

根据The Dodo部分中的
“flightless”“lived on fruits fallen from the island's trees”和“The easily controlled bird”等可推测出，渡渡鸟缺少保护自己的能力。

2．答案与解析：D 细节理解题。

根据The Dodo部分中的
“The population of dodos rapidly decreased and the last one was killed in 1681”可判断，渡渡鸟已经灭绝了，再根据Tigers部分中的“the Bali，Javan，
and Caspian tigers are already extinct”可知，这三种老虎已经灭绝。

3．答案与解析：C 细节理解题。

根据Rhinos部分中的
“The rhino horn is a highly prized item for Asian medicine”和Tigers部分中的
“Like the rhino horn, tigers' bones and organs are sought after(寻
找)for traditional Chinese medicines”可知，犀牛角和老虎的骨头及器官都有很高的药用价值。

4．答案与解析：D 推理判断题。

根据The Giant Panda部分中的
“The future of the World Wild Fund For Nature's symbol is far from certain”可知，“世界自然基金会”的形象代表是大熊猫。

B
【读篇解读】本文是说明文。

文章是对瓢虫的介绍。

5．答案与解析：A 推理判断题。

由第三段中的
“mites, aphids, mealybugs, green flies, and other cropdestroyers”可知，这些都是对庄稼有害的虫子。

6．答案与解析：D 细节理解题。

由第四段中的
“ladybugs... set free among orange trees that were dying from being eaten by insects”可知，十九世纪瓢虫被从澳大利亚带到加利福尼亚州是为了挽救被害虫侵害的橘子树。

7．答案与解析：D 词义猜测题。

由倒数第二段中的
“Very few birds or insects will eat a ladybug because it gives off something that is dangerous to eat.”可知，很少有鸟或昆虫吃瓢虫。

再由画线部分后的“a bird about 100 times its size”可知，当遇见比它大的鸟时，瓢虫会释放某种物质从而对鸟造成威胁。

故此处的stand up to有“回击、抵御”之意。

8．答案与解析：C 推理判断题。

本文旨在介绍瓢虫这种能够吃害虫的昆虫，它们对于庄稼来说是得力的帮手，故C项中的helper最符合瓢虫的这一特性。

Ⅲ.阅读七选五
【语篇解读】文章介绍了如何养成跑步的习惯。

1．答案与解析：F 根据空后的“Running can be boring at times”可知，此处应选F项“人们愿意去做很多活动，除了跑步以外”与此形成对应。

2．答案与解析：A 下一句中的“running communities”说明，此处建议加入跑步团体。

故选A。

3．答案与解析：E 此句是本段的总结句，E项中的Shorter distances与第一句中的
short distances相呼应。

4．答案与解析：D 由本段主旨句可知，本段主要参加跑步比赛，D项中的race和空前提到的race相呼应。

5．答案与解析：C 由下文中的“A friend helps to push you through the times”可知，C项正确。