试题与答案

RNA是微生物的遗传物质吗?为什么?

题型:问答题 简答题

题目:

RNA是微生物的遗传物质吗?为什么?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析:alone is insufficient because x-y could equal either 5 or -5. (2) alone is sufficient; the statement can be simplified to x=y+3, in which case x-y=y+3-y=3.

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题型:单项选择题

A good modern newspaper is an extraordinary piece of reading. It is remarkable first for what it contains the range of news from local crime to international politics, from sports to business to fashion to science, and the range of comment and special features (特定) as well, from editorial page to feature articles and interviews to criticism of books, art, theatre and music. A newspaper is even more remarkable for the way one reads it never completely, never straight through, but always by jumping from here to there, in and out glancing at one piece, reading another article all the way through, reading just a few paragraphs of the next.
A good modern newspaper offers a variety to attract many different readers, but far more than any one reader is interested in. What brings this variety together in one place is its topicality (时事性), its immediate relation to what is happening in your world and your locality now. But immediacy and the speed of production that goes with it mean also that much of what appears in a newspaper has no more than transient (短暂的) value.
For all these reasons, no two people really read the same paper: what each person does is to put together out of the pages of that day’s paper, his own selection and sequence, his own news paper. For all these reasons, reading newspapers efficiently, which means getting what you want from them without missing things you need but without wasting time, demands skill and self-awareness as you modify and apply the techniques of reading.

A modem newspaper is remarkable for all the following except its ______.

A. wide coverage



B. uniform style
C. speed in reporting news


D. popularity

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题型:单项选择题

控制:指为了实现企业的计划目标而对企业的生产经营活动进行纠偏校正的行为。控制的目的在于保证企业的实际生产经营活动成效与预期目标相一致。
下列现象中关于控制的说法,不正确的一项是( )。

A.控制的对象应具有一定范围发展变化的可能性空间
B.所确定的控制目标必须包含在事物发展变化的可能性空间中
C.控制的对象也可能只有一种发展变化的可能性
D.实施控制者必须具备一定的控制能力

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