三、阅读理解
Every year, lots of animals around the world go on migration (迁徙) journeys. Some need to find food; others are looking for somewhere to produce and raise their young. Migrations can be long and difficult for animals, but new research on birds found that farmlands along the way can help them.
In spring, hundreds of thousands of birds living near Lake Poyang, in China, fly north to Siberia. On the way, they find places to stop and eat. Some birds eat young grass. But this food can last for only a few weeks. And climate (气候) change can sometimes make the grass grow earlier than usual. This means that some birds arrive too late to eat the grass. Also, as more land is used for farming, there are fewer natural wetlands where birds like to look for food.
A team of researchers followed 246 birds flying from Lake Poyang to Siberia. They found that the birds changed their diets to adapt to (适应) the environment they passed through. As well as eating grass from the wetlands along the way, the birds also ate seeds (种子) farmers left.
The researchers believe that seeds are now a more important part of migrating birds’ diets since there are fewer natural wetlands. If farmers use different ways of harvesting (收割庄稼), such as using machines, more seeds will be left behind in fields, which can help to feed migrating birds. Still, wetlands must be protected, so the birds can enjoy different food during their long journeys.
(
A. Raising their babies.
B. Enjoying the journey.
C. Sending food to others.
D. Taking care of the old.
(
A. There is no grass growing along the way.
B. The climate on the way becomes colder than before.
C. Fewer natural wetlands are left for them to find food.
D. Some of the birds set out early and eat too much grass.
(
A. By changing their diets.
B. By changing the way they flew.
C. By making their homes in wetlands.
D. By making friends with farmers.
(
A. Stop killing, stop polluting
B. Save water, save life
C. Birds help with harvesting work
D. Farming and migrating
Every year, lots of animals around the world go on migration (迁徙) journeys. Some need to find food; others are looking for somewhere to produce and raise their young. Migrations can be long and difficult for animals, but new research on birds found that farmlands along the way can help them.
In spring, hundreds of thousands of birds living near Lake Poyang, in China, fly north to Siberia. On the way, they find places to stop and eat. Some birds eat young grass. But this food can last for only a few weeks. And climate (气候) change can sometimes make the grass grow earlier than usual. This means that some birds arrive too late to eat the grass. Also, as more land is used for farming, there are fewer natural wetlands where birds like to look for food.
A team of researchers followed 246 birds flying from Lake Poyang to Siberia. They found that the birds changed their diets to adapt to (适应) the environment they passed through. As well as eating grass from the wetlands along the way, the birds also ate seeds (种子) farmers left.
The researchers believe that seeds are now a more important part of migrating birds’ diets since there are fewer natural wetlands. If farmers use different ways of harvesting (收割庄稼), such as using machines, more seeds will be left behind in fields, which can help to feed migrating birds. Still, wetlands must be protected, so the birds can enjoy different food during their long journeys.
(
A
) 1. Which can be a reason for migration according to Paragraph 1?A. Raising their babies.
B. Enjoying the journey.
C. Sending food to others.
D. Taking care of the old.
(
C
) 2. What problem may the birds meet when flying from Lake Poyang to Siberia?A. There is no grass growing along the way.
B. The climate on the way becomes colder than before.
C. Fewer natural wetlands are left for them to find food.
D. Some of the birds set out early and eat too much grass.
(
A
) 3. How did the birds adapt to the environment they passed through?A. By changing their diets.
B. By changing the way they flew.
C. By making their homes in wetlands.
D. By making friends with farmers.
(
D
) 4. What can be the best title of the passage?A. Stop killing, stop polluting
B. Save water, save life
C. Birds help with harvesting work
D. Farming and migrating
答案：1.A
2.C
3.A
4.D
2.C
3.A
4.D
解析：
【分析】
本题为英语阅读理解题，需通过定位原文对应信息解答细节题和主旨题：1题定位第一段找迁徙原因；2题定位第二段找鸟类迁徙途中的问题；3题定位第三段找鸟类适应环境的方式；4题归纳全文主旨。
【解析】
1. 细节理解题：定位第一段“Some need to find food; others are looking for somewhere to produce and raise their young.”，可知迁徙原因包括养育幼崽，对应A选项，B、C、D均未提及，故选A。
2. 细节理解题：定位第二段最后“Also, as more land is used for farming, there are fewer natural wetlands where birds like to look for food.”，可知鸟类面临自然湿地减少的问题，对应C选项，A、B、D均不符合原文，故选C。
3. 细节理解题：定位第三段“They found that the birds changed their diets to adapt to (适应) the environment they passed through.”，可知鸟类通过改变饮食适应环境，对应A选项，B、C、D均未提及，故选A。
4. 主旨大意题：全文围绕鸟类迁徙途中的农业（农田）与鸟类的关系展开，最佳标题为“Farming and migrating”，对应D选项，A、B、C均偏离主旨，故选D。
【答案】
1.A
2.C
3.A
4.D
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本文是关于鸟类迁徙与农业关系的说明文，重点考查学生定位原文信息的细节理解能力和归纳主旨的能力，整体难度适中。
【难度系数】
0.5
本题为英语阅读理解题，需通过定位原文对应信息解答细节题和主旨题：1题定位第一段找迁徙原因；2题定位第二段找鸟类迁徙途中的问题；3题定位第三段找鸟类适应环境的方式；4题归纳全文主旨。
【解析】
1. 细节理解题：定位第一段“Some need to find food; others are looking for somewhere to produce and raise their young.”，可知迁徙原因包括养育幼崽，对应A选项，B、C、D均未提及，故选A。
2. 细节理解题：定位第二段最后“Also, as more land is used for farming, there are fewer natural wetlands where birds like to look for food.”，可知鸟类面临自然湿地减少的问题，对应C选项，A、B、D均不符合原文，故选C。
3. 细节理解题：定位第三段“They found that the birds changed their diets to adapt to (适应) the environment they passed through.”，可知鸟类通过改变饮食适应环境，对应A选项，B、C、D均未提及，故选A。
4. 主旨大意题：全文围绕鸟类迁徙途中的农业（农田）与鸟类的关系展开，最佳标题为“Farming and migrating”，对应D选项，A、B、C均偏离主旨，故选D。
【答案】
1.A
2.C
3.A
4.D
【知识点】
英语阅读理解、细节理解题、主旨大意题
【点评】
本文是关于鸟类迁徙与农业关系的说明文，重点考查学生定位原文信息的细节理解能力和归纳主旨的能力，整体难度适中。
【难度系数】
0.5