单元成果展示(Unit 5)Fantastic friends (时间：100分钟 满分：100分) Ⅰ．完形填空(10分) Only humans speak using words．But all animals can 1 in one way or another．Did you know about infrasonic(次声的) communication used by elephants This is 2 it works． Humans hear low sounds in music．But we don't hear sounds lower than these．3 ，animals such as elephants can hear much lower sounds than humans can．And what's more，they can make 4 in that range(范围) as well，and they 5 them to communicate with each other．This is known as infrasound(次声)． Another 6 thing about infrasound is that it travels over several kilometres．Sounds，like the ones people can hear，don't 7 well through walls，leaves，trees，and so on，which is why we 8 not hear sounds from more than 100 metres away．But infrasound is much “stronger”，and things like grass and trees make no 9 to it．Therefore，it can travel much further． There have been reports of people watching groups of elephants feeding or resting and then the elephants 10 all ran away for no reason at all．They certainly heard a warning call from a long way away． ( B )1．A．plan B． communicate C．change D．treat 解析：句意：但是所有动物都能以这样或那样的方式交流。plan计划；communicate交流；change改变；treat对待。根据“Did you know about infrasonic(次声的) communication used by elephants？”可知，此处指的是“以这样或那样的方式交流”。故选B。 ( C )2．A．why B．where C．how D．when 解析：句意：这就是它的运作方式。why为什么；where哪里；how如何；when什么时候。根据“Did you know about infrasonic(次声的) communication used by elephants？”可知，此处在描述交流的方式，应该用how引导。故选C。 ( A )3．A．However B．Therefore C．Also D．Later 解析：句意：然而，大象等动物能听到的声音比人类低得多。however然而；therefore因此；also也；later之后。根据“animals such as elephants can hear much lower sounds than humans can”可知，此处表示转折，因此应该用however。故选A。 ( D )4．A．plans B．faces C．mistakes D．sounds 解析：句意：更重要的是，它们也能在这个范围内发出声音，并用它们相互交流。plan计划；face脸；mistake错误；sound声音。根据“they can make...in that range(范围) as well”可知，此处指的是“发出声音”。故选D。 ( A )5．A．use B．meet C．mind D．produce 解析：句意：更重要的是，它们也能在这个范围内发出声音，并用它们相互交流。use使用；meet见面；mind介意；produce生产。根据“...them to communicate with each other”可知，此处指的是“用发出的声音交流”。故选A。 ( A )6．A．amazing B．social C．spare D．direct 解析：句意：次声的另一个神奇之处是它能传播数千米。amazing惊奇的；social社会的；spare空闲的；direct直接的。根据“Another...thing about infrasound is that it travels over several kilometres．”可知，声音能传播数千米是一件很惊奇的事情。故选A。 ( C )7．A．live B．deal C．travel D．post 解析：句意：像人们能听到的声音一样，它们不能很好地穿过墙壁、树叶、树木等，这就是为什么我们不能听到100米以外的声音。live住；deal交易；travel(声)传播；post邮寄。根据“don't...well through wall，leaves，trees，and so on”可知，此处指的是 ... ...
