Unit 5 Into the wild

Section Ⅰ Starting out amp; Understanding ideas

單詞拼寫 根據首字母或漢語提示，用本部分所學單詞的正確形式填空。

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. "（慈善機構） 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 "（尋找） 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 nbsp;（位置）.

選擇填空 用方框中所給短語的適當形式填空。

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.

課文語法填空

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."

閱讀理解

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 （候鳥） 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？

A. The Arctic tern. B. The swallow.

C. The bar-tailed godwit. D. The ancient murrelet.

3. What does the author think of the ancient murrelet’s trip from Canada to China？

A. Confusing. B. Admiring. C. Impressive. D. Unnecessary.

4. What does the last paragraph mainly tell us about migratory birds？

A. The author’s admiration and pity for them. B. The impact of climate change on them.

C. What people should do to protect them. D. How they find food during their trip.

閱讀七選五

The world’s African elephants are in serious danger. 1 And if we do nothing to put an end to the ivory （象牙） trade， elephants will die out in the wild within the next 20 years.

Many believe that a good hunter could get ivory without killing the elephant—this is not true. Only two-thirds of an elephant’s ivory sticks out of their mouth. 2 The tusk （長牙） is not just bone but rather it is alive， filled with nerves and blood vessels （血管） and when broken off， the tusks would likely become infected （感染） and lead to a slow and painful death.

However， there is a new form of hope rising from nature itself. African elephants are being born without the tusks. But why are these elephants on earth now being born tuskless？ 3

Is such change beneficial to elephants’ survival in the long term？ As we know， elephants’ tusks are not just beautiful surface. 4 Therefore， scientists are just beginning to track the newly tuskless among them to see how this change influences the animals.

Ivory hunters are not the only danger faced by elephants today. And more support is needed than ever to create a safe world where elephants can live together with humans happily. 5

A. And the rest lies under the surface.

B. Because many African elephants are tuskless.

C. They also have important uses such as digging.

D. Action should be taken to protect elephants in the world.

E. It is said that one is killed every 15 minutes for their ivory.

F. And it’s in our power to make this happen by raising awareness.

G. That’s because elephants without tusks have a better chance of surviving.

1. " 2. " 3. " 4. " 5.