Both botany(植物学)and zoology are parts of a more general field of science, bi

游客2023-07-24  19

问题     Both botany(植物学)and zoology are parts of a more general field of science, biology. The two are studies of【C1】______things, which share certain characteristics,【C2】______they are plants or animals. Botany deals with plants,【C3】______organisms that can manufacture their own【C4】______by the use of sunlight.【C5】______, on the other hand, deals with animals, those organisms that cannot manufacture their own food and are【C6】______dependent on plants for their food.
    Plants and animals【C7】______many abilities, but the extent【C8】______which plants can exercise some of those abilities is【C9】______.  For example, both plants and animals need food, water, and warmth for growth, but plants can【C10】______to acquire those needs only by the slow【C11】______of their leaves and roots,【C12】______animals can move large distances in relatively【C13】______time.  When an animal is hurt with a needle, the animal will【C14】______the part of the body being【C15】______. This ability to draw back【C16】______pain or irritation, called irritability, is【C17】______only to a very limited extent in plants.
    If plants have the same【C18】______and irritability as animals, animals would have a more difficult time finding food.  If animals were as limited as plants, they might have evolved a【C19】______of manufacturing their own food, as plants d9 now.  The world would be a very difficult place than it is if the characteristics of the plants and animals were【C20】______. [br] 【C11】

选项 A、extension
B、extent
C、existence
D、extraction

答案 A

解析 名词辨析题。完成此处同样需要结合上下文的内容,在下文中谈到了动物的情况,动物能够四处走动,而植物只能借助根与叶的伸展来获得食物、水等。这里表示伸展的词汇只有A)。这四个名词虽然词形相近,但意义务不相同,extent意为“程度,范畴,广度”;existence意为“存在,实在,生活,存在物,实在物”;extraction意为“抽出,取出”,均不合要求。
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