Unit 5 Into the wild

Section Ⅰ Starting out & Understanding ideas

单词拼写 根据首字母或汉语提示，用本部分所学单词的正确形式填空。

1. The s to the problem is not perfect but no one can come up with a better one at the moment.

2. The number of the birds c  by about 60％ in the past 40 years.

3. The a  expression on her face suggested she had not heard the news.

4. As Chinese is popular today， Tim d  to try hard to improve his Chinese.

5. The war would d  a city， and life would be hard for people then.

6.  （慈善机构） is an organization that helps people in need.

7. His  （每年的） production of this year is twice as much as that of last year.

8. The man is trying to  （寻找） an opportunity to show his ability to the manager.

9. He has gone to be  （量） for a new suit because of the big party next week.

10. Beidou Navigation Satellite System （BDS） can help you find your  （位置）.

选择填空 用方框中所给短语的适当形式填空。

manage to the solution to cut down feed on make sure

1. It is our duty  that the students on campus are taken good care of.

2. As we all know， bats fly at night and  insects or fruits.

3. They  catch sight of some mountain goats on this trip.

4. The team are working very hard so that they can find  the problem.

5. The government ordered that for every tree  two more be planted.

课文语法填空

Many animals migrate at certain times of the year. One of the most wonderful migrations in nature is 1 of the North American monarch butterfly. Every autumn， they begin 2 long and difficult journey around 4，000 kilometres south and find their way to California or Mexico. They are able to tell the time of day and use their eyes 3 （measure） the position of the sun. 4 （eventual）， they reach the places where they will spend the winter. Now the monarch is 5 serious trouble， and its population 6 （crash） by as much as 90 percent in the last few years. Human activity is the main reason. In many of the places where the butterfly can 7 （find）， people are destroying the natural environment by 8 （cut） down trees and using 9 （chemical） that kill the plants that monarch caterpillars eat. Luckily， people are aware of the problem and begin to take action. The more we know about the monarchs， the 10 （great） the chance they will survive.

1.   2.    3.    4.    5. 

6.    7.    8.    9.    10. 

阅读理解

I really enjoy autumn’s display of golden leaves， but as a bird lover in the UK， the real thrill at this time of year is the arrival of migratory birds （候鸟） from Iceland， Siberia and Canada.

The UK is lucky—in winter， we get a wide variety of birds heading here to escape tough conditions further north. And in summer， we are visited by birds from Africa such as swallows and cuckoos that make the most of our long， light days for having their young. While the long flights are undoubtedly impressive， there are some species that fly considerably further， spending much of their lives at the extreme ends of Earth.

The Arctic tern has the world’s longest migration： a round-trip of 35，000 kilometers annually. Arctic terns break up their long journeys though， so if you are looking for the world’s longest non-stop flyer， that record is held by the bar-tailed godwit.

So why do birds migrate？ It makes sense to head somewhere warmer for winter， but it can be hard to explain why some African species then return to Europe for summer when food is still plentiful in their wintering grounds. It could be because there is less competition here， or because our longer， cooler days are useful. Some trips are even harder to explain. For example， the ancient murrelet flies almost 8，000 kilometers from Canada to China， despite very similar conditions.

Although there is still much we don’t know， we do know that our changing climate is making birds lose the benefits of such long journeys. Arctic terns survive on sand eels when they arrive in the Shetland Islands. In 2004， the UK saw a sudden drop in sand eels due to climate change. The Shetland Islands usually hosted more than 20，000 pairs of Arctic terns， but didn’t see a single chick survive to adulthood that summer. I have so much admiration for the world’s furthest fliers， and I just hope they can cling on and that we can come to fully understand them.

1. Why do some birds travel to the UK from Africa in summer？

A. To search for more food.        B. To escape the heat in Africa.

C. To enjoy the warmth in the UK.  D. To have young birds.

2. What bird flies the longest distance without stop？