剑桥雅思7Test1阅读Passage1答案解析 Let’s go bats

剑桥雅思7Test1阅读Passage1答案解析 Let’s go bats

剑桥雅思7 Test 1 Passage 1阅读答案解析

第1题答案：B

对应原文：B段：Bats are not the only creatures to face this difficulty today. Obviously the night-flying insects that they prey on must find their way about somehow.

答案解析：原文中提到，蝙蝠并不是今天唯一一种面对该困难的生物。显然它们捕食的夜间飞行的昆虫也必须以某种方式找到自己的路径。后面还说了深海鱼类、鲸鱼、海豚等。即提到除了蝙蝠之外，其他不依赖视觉进行导航的动物的例子。由此确定答案。

第2题答案：A

对应原文：A段：In the time when the dinosaurs dominated the daytime economy, our mammalian ancestors probably only managed to survive at all because they found ways of scraping a living at night.

答案解析：原文提到，在恐龙主宰白天的时候，我们哺乳动物的祖文章来自老烤鸭雅思先可能因为找到在晚上谋生的方式才勉强活了下来。原文中early mammals与题干中mammalian ancestors对应，avoid dying out与managed to survive对应，由此确定答案为A。

第3题答案：A

对应原文：A段：Given that there is a living to be made at night, and given that alternative daytime trades are thoroughly occupied, natural selection has favoured bats that make a go of the night-hunting trade.

答案解析：原文中提到，考虑到晚上仍然可以谋生，而白天的食物资源已经被占据，自然选择偏爱那些能够在晚上进行捕猎的蝙蝠。即蝙蝠在晚上捕猎的原因。由此确定A为答案。

第4题答案：E

对应原文：E段：much of our scientific understanding of the details of what bats are doing has come from applying radar theory to them.

答案解析：原文中提到，我们对蝙蝠行为细节的理解大多来于雷达理论的应用。题干中的particular discovery与原文中radar theory对应，understanding原词出现，由此确定答案为F。

第5题答案：D

对应原文：D段后部： After this technique had been invented, it was only a matter of time before weapons designers adapted it for the detection of submarines.

答案解析：原文中提到，在这一技术发明之后，武器设计者将其应用于潜艇侦测只是时间问题。即早期回声定位的军事应用。由此确定答案为D。

第6题答案：phantom

对应原文：D段：although the sensation may be referred to the front of the face, like the referred pain in a phantom limb

答案解析：根据标题facial vision定位到D段，根据pain定位到具体的句子。题干中空对arm or leg起修饰作用，而这两个词在原文中被替换为limb，修饰词是phantom，由此确定答案。

第7题答案：echoes/obstacles

对应原文：D段：it turns out, really goes in through the ears. Blind people, without even being aware of the fact, are actually using echoes of their own footsteps and of other sounds, to sense the presence of obstacles.

答案解析：顺着上一题往下，根据ears定位到具体的句子。空前词perceiving与原文中的sense同义替换，又因为题目要求只能填一个词，而presence没有什么实际含义，由此确定答案为obstacles

第8题答案：depth

对应原文：D段：Before this was discovered, engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.

答案解析：根据before和principle定位到具体的句子。空前词calculate与measure同义替换，由此确定答案为depth。

第9题答案：submarines

对应原文：D段：After this technique had been invented, it was only a matter of time before weapons designers adapted it for the detection of submarines.

答案解析：顺着上一题往下，根据weapons designers和wartime的对应定位到具体句子。空前词finding与detection同义替换，由此确定答案为submarines。

第10题答案：natural selection

对应原文：E段：natural selection working on bats, had perfected the system tens of millions of years earlier

答案解析：根据long before与tens of millions of years earlier的对应定位到这一句。从题干含义我们可以推测空上填的应该某种原因，由此确定答案为natural selection。

第11题答案：radio waves/echoes

对应原文：E段：It is technically incorrect to talk about bat ‘radar’, since they do not use radio waves.

答案解析：根据inaccurate与technically incorrect的对应确定具体句子。题目because后半部分的内容只是将原文since后的句子主动变被动，很容易确定答案为radio waves。

第12题答案：mathematical theories

对应原文： E段：But the underlying mathematical theories of radar and sonar are very similar

答案解析：题目中similar对空其修饰作用，原文中similar做表语，修饰主语mathematical theories，根据修饰关系确定答案。

第13题答案：zoologist

对应原文： The American zoologist Donald Griffin, who was largely responsible for the discovery of sonar in bats, coined the term ‘echolocation’ to cover both sonar and radar

答案解析：根据echolocation这一专有名词定位到具体的句子。从题干内容可以推测空上填的是个职业。而这一句话中唯一可以表示职业的词就是zoologist。由此确定答案。