2. 外语
  3. If an animal is moved from its home in the tropics (热带地区) to a cold climate, it will die if it is not kept warm. And animals【C1】

If an animal is moved from its home in the tropics (热带地区) to a cold climate, it will die if it is not kept warm. And animals【C1】

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问题     If an animal is moved from its home in the tropics (热带地区) to a cold climate, it will die if it is not kept warm. And animals【C1】________to cold climates will die if they are moved to the tropics. Many plants, too, will die if they are removed from the place where they【C2】________grow and are transplanted (移植) into an unfamiliar soil. Almost every species is adapted to life in a particular place by its organs and their functions and by【C3】________habits. The specialized adaptation has great advantages, for it【C4】________many organisms to survive under different conditions. It also has disadvantages, for it means that the life of most species is controlled by【C5】________conditions.
    Living things are not【C6】________over the earth freely; most species have definite habits for living places. Ecology is the study of how organisms live in their environment This means finding out how an organism survives and【C7】________in certain surroundings. By environment we mean not only the soil and the climate but the living things of the same species and other species, plant or animal Most living things are【C8】________to their environment Some can【C9】________certain features of their environment to suit themselves; a beaver (海狸), for example, can make ponds by building dams, many birds and insects can build elaborate nests to provide【C10】________for their young. But these skills are restricted and highly specialized. Most organisms must adapt their bodies to fit in with their surroundings, and since they can adapt only for particular surroundings, they are found only in places where they can live successfully with the least effort.
    A)  normally     E) scattered    I) reproduces   M) enables
    B)  shelter      F) abundant     J) permanent    N) alternative
    C)  assigned     G) surely       K) slaves       O) local
    D)  accustomed   H) alter        L) approach
【C9】
选项
答案H
解析 空白处前为can，后为名词features，提示此处应填及物动词，且为原形。下文海狸筑坝等例子是为了说明本考点所在句子的观点的，因此根据例子的内容可确定答案为alter，表明生物改变环境来适应自己。
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大学英语四级

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