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四、信息还原
Scientists are using satellites(卫星) to count Antarctic krill(南极磷虾) from space. These tiny creatures are just about six centimetres long and look a bit like prawns(明虾), but they are more important. 1.
Scientists need to watch and count krill so they can check the health of the places where these animals live. However, in the Southern Ocean, where they live, there are more than 700 trillion adult Antarctic krill. That's like trying to count all the stars you see at night! 2.
3.
By comparing pictures taken by satellites, scientists will be able to guess how many krill live in different ocean areas. 5.
A. Now, scientists are developing a new method for finding krill.
B. Then we add another krill and measure again.
C. Scientists find that more krill in the water make the ocean look darker.
D. They are food for lots of larger sea animals such as whales.
E. So finding ways to count them all is a super hard task.
F. This will give them a better idea of total krill numbers in the Southern Ocean.
G. Now they are trying their best to study the colour of sea water from space.
Scientists are using satellites(卫星) to count Antarctic krill(南极磷虾) from space. These tiny creatures are just about six centimetres long and look a bit like prawns(明虾), but they are more important. 1.
D
Scientists need to watch and count krill so they can check the health of the places where these animals live. However, in the Southern Ocean, where they live, there are more than 700 trillion adult Antarctic krill. That's like trying to count all the stars you see at night! 2.
E
Even if we have special cameras and computers to help.3.
A
They study the colour of sea water from space. The amount of light the ocean absorbs changes depending on how many krill are in it. Dr Cait McCarry, from the University of Strathclyde, said, “We start with sea water. Then we add a krill and measure how much light the water absorbs. 4. B
”By comparing pictures taken by satellites, scientists will be able to guess how many krill live in different ocean areas. 5.
F
This will also show how they're spread across different areas and how climate change and fishing affect them.A. Now, scientists are developing a new method for finding krill.
B. Then we add another krill and measure again.
C. Scientists find that more krill in the water make the ocean look darker.
D. They are food for lots of larger sea animals such as whales.
E. So finding ways to count them all is a super hard task.
F. This will give them a better idea of total krill numbers in the Southern Ocean.
G. Now they are trying their best to study the colour of sea water from space.
答案
1.D 2.E 3.A 4.B 5.F
解析
【分析】
本题为英语信息还原题，需结合上下文的逻辑关系（如因果、顺承、指代等）选择合适句子填空。解题时先通读全文，明确文章围绕“科学家用卫星统计南极磷虾”展开，再逐个分析每个空缺处的前后语境，匹配逻辑衔接的句子：1空需解释磷虾的重要性，2空需承接数量多导致计数难的因果，3空需引出科学家的新方法，4空需顺承实验步骤，5空需承接卫星方法的结果。
【解析】
1. 前文提到磷虾“more important”，D选项“They are food for lots of larger sea animals such as whales”解释了磷虾重要的原因，故1选D；
2. 前文说明磷虾数量极多（“more than 700 trillion”“like counting stars”），E选项“So finding ways to count them all is a super hard task”承接因果关系，说明计数的难度，故2选E；
3. 前文提到计数磷虾困难，后文说“study the colour of sea water from space”，A选项“Now, scientists are developing a new method for finding krill”承上启下，引出新方法，故3选A；
4. 前文实验步骤是“add a krill and measure”，B选项“Then we add another krill and measure again”顺承实验的后续步骤，故4选B；
5. 前文说“By comparing pictures taken by satellites, scientists will be able to guess how many krill”，F选项“This will give them a better idea of total krill numbers in the Southern Ocean”承接卫星方法的结果，故5选F。
【答案】
1.D 2.E 3.A 4.B 5.F
【知识点】
英语信息还原、语篇逻辑衔接
【点评】
本题考查学生对英语语篇逻辑的理解能力，需结合上下文的指代、因果、顺承关系选择合适句子，是常见的英语阅读题型，难度适中。
【难度系数】
0.6
本题为英语信息还原题，需结合上下文的逻辑关系（如因果、顺承、指代等）选择合适句子填空。解题时先通读全文，明确文章围绕“科学家用卫星统计南极磷虾”展开，再逐个分析每个空缺处的前后语境，匹配逻辑衔接的句子：1空需解释磷虾的重要性，2空需承接数量多导致计数难的因果，3空需引出科学家的新方法，4空需顺承实验步骤，5空需承接卫星方法的结果。
【解析】
1. 前文提到磷虾“more important”，D选项“They are food for lots of larger sea animals such as whales”解释了磷虾重要的原因，故1选D；
2. 前文说明磷虾数量极多（“more than 700 trillion”“like counting stars”），E选项“So finding ways to count them all is a super hard task”承接因果关系，说明计数的难度，故2选E；
3. 前文提到计数磷虾困难，后文说“study the colour of sea water from space”，A选项“Now, scientists are developing a new method for finding krill”承上启下，引出新方法，故3选A；
4. 前文实验步骤是“add a krill and measure”，B选项“Then we add another krill and measure again”顺承实验的后续步骤，故4选B；
5. 前文说“By comparing pictures taken by satellites, scientists will be able to guess how many krill”，F选项“This will give them a better idea of total krill numbers in the Southern Ocean”承接卫星方法的结果，故5选F。
【答案】
1.D 2.E 3.A 4.B 5.F
【知识点】
英语信息还原、语篇逻辑衔接
【点评】
本题考查学生对英语语篇逻辑的理解能力，需结合上下文的指代、因果、顺承关系选择合适句子，是常见的英语阅读题型，难度适中。
【难度系数】
0.6
