三、阅读理解
According to a study,the population of polar bears will drop seriously by the year:2080.The cause is melting sea ice.Without ice,the bears must walk on the bank which is away from their main food source.That means the animals will be in danger because of lacking food.
“ There's not enough food on land to support a polar bear population,” Doctor Smith,the study's lead writer said.Lack of food induces another problem.Mother bears may not be fat enough to produce milk for their babies.Some bear populations could stop having babies,leading to a rapid drop in numbers.
Arctic(北极的)sea ice usually melts in spring and summer,and then grows in winter.But now,the ice is taking longer to grow back.Weather reports say the Arctic is warming twice as fast as the rest of the planet.Ice here has reduced by 13% every 10 years since the 1970 s.The Arctic is home to about 26,000 polar bears.Scientists have known that the animals are in danger.
But the study also notes that it is still possible to slow down Arctic melting.The world can reduce the burning of fossil fuels(化石燃料)and greenhouse gas emissions (排放).“ Saving the polar bears is up to us.I believe that there is hope.But humans need to act quickly to turn that hope into a reality," Doctor Smith said.
(
A.A cookbook. B.A storybook.
C.An art magazine. D.A science magazine.
(
A.Because of greenhouse gas emissions.
B.Because of the burning of fossil fuels.
C.The sea ice in the Arctic is melting.
D.Mother bears stop having babies.
(
A.Causes. B.Prints. C.Reaches. D.Shuts.
(
A.In the South Pole. B.In the sea.
C.In the North Pole. D.On the earth.
According to a study,the population of polar bears will drop seriously by the year:2080.The cause is melting sea ice.Without ice,the bears must walk on the bank which is away from their main food source.That means the animals will be in danger because of lacking food.
“ There's not enough food on land to support a polar bear population,” Doctor Smith,the study's lead writer said.Lack of food induces another problem.Mother bears may not be fat enough to produce milk for their babies.Some bear populations could stop having babies,leading to a rapid drop in numbers.
Arctic(北极的)sea ice usually melts in spring and summer,and then grows in winter.But now,the ice is taking longer to grow back.Weather reports say the Arctic is warming twice as fast as the rest of the planet.Ice here has reduced by 13% every 10 years since the 1970 s.The Arctic is home to about 26,000 polar bears.Scientists have known that the animals are in danger.
But the study also notes that it is still possible to slow down Arctic melting.The world can reduce the burning of fossil fuels(化石燃料)and greenhouse gas emissions (排放).“ Saving the polar bears is up to us.I believe that there is hope.But humans need to act quickly to turn that hope into a reality," Doctor Smith said.
(
D
)1.Where is this passage most probably from?A.A cookbook. B.A storybook.
C.An art magazine. D.A science magazine.
(
C
)2.Why will polar bear populations drop seriously by 2080?A.Because of greenhouse gas emissions.
B.Because of the burning of fossil fuels.
C.The sea ice in the Arctic is melting.
D.Mother bears stop having babies.
(
A
)3.What does the underlined word “ induces " in paragraph 2 mean?A.Causes. B.Prints. C.Reaches. D.Shuts.
(
C
)4.Where is the polar bears' home according to paragraph 3?A.In the South Pole. B.In the sea.
C.In the North Pole. D.On the earth.
答案：【解析】：
这是一道英语阅读理解题，主要考查了学生对文章内容的理解和词汇的掌握。题目给出了一个关于北极熊数量减少的研究描述，然后提出了四个问题，需要学生从文章中找到答案。
1. 第一题是推理判断题，需要学生判断文章的可能来源。根据文章的内容，可以推断出这篇文章最可能来自科学杂志，因为文章主要讨论了北极熊数量减少的科学研究。
2. 第二题是细节理解题，需要学生找出北极熊数量到2080年将大幅减少的原因。根据文章第一段的描述，原因是北极的海冰正在融化。
3. 第三题是词义猜测题，需要学生根据上下文猜测“induces”的意思。根据第二段的描述，缺乏食物会导致另一个问题，即母熊可能无法为幼崽产生足够的奶，因此可以推断出“induces”的意思是“导致”。
4. 第四题是细节理解题，需要学生找出北极熊的家在哪里。根据第三段的描述，北极是大约26000只北极熊的家园，因此可以得出答案。
【答案】：
1. D
2. C
3. A
4. C
这是一道英语阅读理解题，主要考查了学生对文章内容的理解和词汇的掌握。题目给出了一个关于北极熊数量减少的研究描述，然后提出了四个问题，需要学生从文章中找到答案。
1. 第一题是推理判断题，需要学生判断文章的可能来源。根据文章的内容，可以推断出这篇文章最可能来自科学杂志，因为文章主要讨论了北极熊数量减少的科学研究。
2. 第二题是细节理解题，需要学生找出北极熊数量到2080年将大幅减少的原因。根据文章第一段的描述，原因是北极的海冰正在融化。
3. 第三题是词义猜测题，需要学生根据上下文猜测“induces”的意思。根据第二段的描述，缺乏食物会导致另一个问题，即母熊可能无法为幼崽产生足够的奶，因此可以推断出“induces”的意思是“导致”。
4. 第四题是细节理解题，需要学生找出北极熊的家在哪里。根据第三段的描述，北极是大约26000只北极熊的家园，因此可以得出答案。
【答案】：
1. D
2. C
3. A
4. C