2. 外语
  3. Vibrations in the ground are a poorly understood but probably widespread means of communication between animals. It seems【C1

Vibrations in the ground are a poorly understood but probably widespread means of communication between animals. It seems【C1

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问题     Vibrations in the ground are a poorly understood but probably widespread means of communication between animals.
    It seems【C1】________ that these animals could have detected seismic "pre-shocks" that were missed by the sensitive vibration-detecting equipment that clutters the world’s earthquake laboratories. But it is possible. And the fact that many animal species behave【C2】________ before other natural events such as storms, and that they have the ability to detect others of their species at distances which the familiar human senses could not manage, is well established. Such observations have led some to suggest that these animals have an extra sense. The best guess is that they can feel and understand【C3】________ that are transmitted through the ground.
    Almost all the research done into animal signaling has been on sight, hearing and smell, because these are senses that people possess. Humans have no sense organs designed specifically to detect【C4】________ vibrations. But, according to researchers who have been meeting in Chicago at a【C5】________ of the Society for Integrative and Comparative Biology,【C6】________ via vibrations of the ground (a means of communication known as seismic signaling) have been almost entirely【C7】________ . These researchers believe that such signals are far more common than biologists had realized — and that they could explain a lot of otherwise【C8】________ features of animal behavior.
    A seismic sense could help to explain certain types of elephant behavior. One is an apparent ability to detect thunderstorms well beyond the range that the sound of a storm can carry. Another is the foot-lifting that many elephants display prior to the arrival of another herd. Rather than【C9】________ the horizon with their ears, elephants tend to freeze their posture and raise and lower a single foot. This probably helps them to work out from which direction the vibrations are【C10】________  .
    A. vibration      B. inexplicable      C. symposium      D. unlikely
    E. terrestrial    F. studied           G. strangely      H. over-looked
    I. travelling     J. interactions      K. shakings       L. scanning
    M. shockingly     N. studying          O. conference
【C9】
选项
答案L
解析 语法题。此处涉及rather than的用法，rather than可以作介词、并列连词和从属连词。
1)用作介词，其后接代词、名词和动名词。相当于instead of，如：Why didn’t you ask for help，rather than trying to do it on your own?你干吗非得自己干，而不请人帮忙?
2)用作并列连词，常用于平等结构，可接名词、形容词、谓语动词、状语、非谓语动词、从句等不同的词项或结构。如：  She telephoned rather than wrote．她打了电话而没有写信。He wanted to sunbathe rather than(to)swim．他宁愿晒日光浴也不去游泳。
3)用作从属连词，表示主观上选优。主句表示喜欢做的事(主句常用would，prefer，like等)，从句则表示不喜欢做的事。谓语用不带to的不定式，强调强烈的取舍欲望，译作： “宁可……决不……”。如：Rather than travel by air, I’d prefer a week on a big liner．我宁愿在大客轮上待一星期而不愿乘飞机旅行。此处rather than相当于instead of，用作介词，故后跟动名词，选项中与文意相符的答案为scanning，表示“用耳朵搜索地平线”。
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