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问题 单项选择题

构成计算机信息系统的部件有很多。
Ⅰ．数据库子系统 Ⅱ．模型库子系统
Ⅲ．知识库子系统 Ⅳ．方法库子系统
Ⅴ．对话子系统
以上部件中，在传统的决策支持系统结构中，必不可少的三个部件是( )。

A．Ⅰ、Ⅱ和Ⅲ

B．Ⅰ、Ⅱ和Ⅳ

C．Ⅱ、Ⅲ和Ⅴ

D．Ⅰ、Ⅱ和Ⅴ

答案

参考答案：D

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我国少数民族数目最多的省区是______．
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Part 4


Questions 26-45


·Read the following passage and decide which answer best fits each space.
·Forquestions26-45, markoneletterA, B, C or D on the Answer Sheet.
Both (26) and zoology are parts of a more general field of science, biology. The two are studies of (27) things, which share certain characteristics, (28) they are plants or animals. Botany deals with plants, whose organisms that can (29) their own food by the use of sunlight. Zoology on (30) hand, deals with animals, those organisms that cannot manufacture their own food and are thus dependent (31) plants for their food.
(32) plants and animals share many abilities, the extent (33) which plants can exercise some of those abilities is (34) . For example, both plants and animals need food, water, and warmth for growth, (35) plants can move to (36) those needs only by the slow extraction of their leaves and roots, while animals can move relatively (37) distances in relatively little time. When an animal is hurt with needle, the animal will (38) the part of the body (39) . This ability to draw back (40) pain or irritation, called irritability, is found only to a very limited extent in plants.
If plants (41) the same (42) as animals, animals would have had a more difficult time finding food. If animals were as limited as plants, they might (43) a means of manufacturing their own food, as plants do now. The world would be a very different place (44) it is if the characteristics of plants and animals were (45)

A．livable

B．alive

C．living

D．lively
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