2. 外语
  3. Certainly no creature in the sea is【C1】______than the common sea cucumber. All living creatures, especially human beings, have t

Certainly no creature in the sea is【C1】______than the common sea cucumber. All living creatures, especially human beings, have t

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问题     Certainly no creature in the sea is【C1】______than the common sea cucumber. All living creatures, especially human beings, have their peculiarities, but【C2】______about the little sea cucumber seems unusual. What else can be said about a bizarre animal that, among other【C3】______, eats mud, feeds almost【C4】______day and night but can live without eating for long periods, and can be poisonous【C5】______is considered supremely edible by gourmets? For some fifty million years, despite all its eccentricities, the sea cucumber has【C6】______on its diet of mud. It is【C7】______enough to live attached to rocks by its tube feet, under rocks in shallow water, or on the surface of mud flats.
    Common in cool water on both Atlantic and Pacific shores, it has the ability to【C8】______upmud or sand and digest whatever【C9】______are present. Sea cucumbers come in a【C10】______of colors,【C11】______from black to reddish brown【C12】______sand color and nearly white. One form even has vivid purple tentacles. Usually the creatures are cucumber shaped—【C13】______their name—and because they are typically rock inhabitants, this【C14】______,【C15】______with flexibility, enables them to squeeze into crevices where they are safe from【C16】______and ocean currents. The most【C17】______thing about the sea cucumber is the way it【C18】______itself. Its major enemies are fish and crabs. When attacked, it squirts all its internal organs into water. It also casts【C19】______attached structures such as tentacles. The sea cucumber will remove its organs and regenerate itself if it is attacked or【C20】______touched; it will do the same if the surrounding water temperature is too high or if the water becomes too polluted
【C13】
选项 A、why
B、then
C、therefore
D、hence
答案D
解析 逻辑关系题此处意为“此物形似黄瓜，故而得名”。因此应选用引导出结果的连词。therefore及hence都可以引导结果，区别在于hence表示因此，所以，常接一名词，独自成句，指接下来的东西是理所当然的必需的东西，但强调其重要性。therefore adv．“因此，所以”=for that reason=consequently常用于连接两个并列分句，其前加“and”或分号“；”，通常引出一个推断出的必然结论。其他类似词还有so conj．／adv．“因而，所以，结果是”，用于比较随便的场合，多用于口语中。thus adv.“如此，像这样，因此，于是”，多用于书面语中，可与therefore换用。
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