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"Migration" in this passage means
"Migration" in this passage means
admin
2010-07-06
79
问题
"Migration" in this passage means
M: Every year, as the seasons change, many birds, fish, insects and land animals start to move. Some travel thousands of kilometers. For many it is for the first time. All of them have one thing in common: they know where they are going and they make no mistakes.
This is migration. There are many things which help animals to migrate. Birds and other animals have a body clock which tells them about changes in temperature and periods of light. Birds and some insects use their eyes to measure and compare the position of the sun from different place.
Many people now believe magnetism is very important. The earth itself is a magnet and every kind of life is affected in some way by its magnetic, fields.
But there are still many questions without answers, for example, the migration of eels. European eels travel down their rivers and into the Atlantic Ocean. They then swim 5600 kilometers to the Sargasso Sea, where they lay their eggs. The eels then die. The baby eels are carried by the Gulf Stream to Europe, a journey which takes two and a half years. They swim back up the rivers. There they live for about ten years before the return journey to the Atlantic. How do they do this? We know what happens to the eels but not how or why.
选项
A、the seasonal moving of creatures.
B、settling down in a new place.
C、the activity controlled by magnetism.
D、knowing where one is going and making no mistakes.
答案
A
解析
本题考查词义推断能力。听力原文一开始讲:“Every year,as the seasons change,many birds,fish,insects and land animals start to move.”之后还有具体的“move”情况,接着我们听到“This is migration.”这是个承上句,是对前文的概括。所以我们可以得知,“migration”就是动物在季节发生变化时去其他地方的行为,即“迁徙”。所以应选择A 。
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公共英语(PETS)
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