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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 1970s. 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 1970s. 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
1. D 2. C 3. A 4. C
解析
【分析】
这是一篇关于北极熊生存现状的英语阅读理解题，共4道小题，分别考查文章来源判断、细节理解、词义猜测和信息定位。解题思路如下：1. 第1题需判断文章来源，通读全文可知内容为北极熊数量减少的科学研究，据此排除错误选项；2. 第2题定位题干中北极熊数量减少的原因，原文明确提及核心原因；3. 第3题结合上下文语境猜测划线词含义；4. 第4题定位第三段中关于北极熊家园的描述，匹配对应选项。
【解析】
1. 第1题：文章围绕北极熊数量减少的科学研究展开，属于科学类内容，A（烹饪书）、B（故事书）、C（艺术杂志）均不符合，故选D。
2. 第2题：根据第一段“The cause is melting sea ice.”可知，北极熊数量减少的原因是北极海冰融化，A、B是导致海冰融化的因素，D是数量减少的结果，故选C。
3. 第3题：结合上下文“缺乏食物导致另一个问题”的语境，induces意为“导致”，对应A选项Causes，故选A。
4. 第4题：根据第三段“The Arctic is home to about 26,000 polar bears.”可知，北极熊的家园是北极，故选C。
【答案】
1.D 2.C 3.A 4.C
【知识点】
阅读理解、细节理解、词义猜测
【点评】
本题为基础英语阅读理解题，考查学生对文章细节的查找、词义的猜测及文章体裁的判断，题型常规，难度适中。
【难度系数】
0.8
这是一篇关于北极熊生存现状的英语阅读理解题，共4道小题，分别考查文章来源判断、细节理解、词义猜测和信息定位。解题思路如下：1. 第1题需判断文章来源，通读全文可知内容为北极熊数量减少的科学研究，据此排除错误选项；2. 第2题定位题干中北极熊数量减少的原因，原文明确提及核心原因；3. 第3题结合上下文语境猜测划线词含义；4. 第4题定位第三段中关于北极熊家园的描述，匹配对应选项。
【解析】
1. 第1题：文章围绕北极熊数量减少的科学研究展开，属于科学类内容，A（烹饪书）、B（故事书）、C（艺术杂志）均不符合，故选D。
2. 第2题：根据第一段“The cause is melting sea ice.”可知，北极熊数量减少的原因是北极海冰融化，A、B是导致海冰融化的因素，D是数量减少的结果，故选C。
3. 第3题：结合上下文“缺乏食物导致另一个问题”的语境，induces意为“导致”，对应A选项Causes，故选A。
4. 第4题：根据第三段“The Arctic is home to about 26,000 polar bears.”可知，北极熊的家园是北极，故选C。
【答案】
1.D 2.C 3.A 4.C
【知识点】
阅读理解、细节理解、词义猜测
【点评】
本题为基础英语阅读理解题，考查学生对文章细节的查找、词义的猜测及文章体裁的判断，题型常规，难度适中。
【难度系数】
0.8
