问题 单项选择题

关于含氮类激素的正确叙述是

A.全部是氨基酸衍生物

B.不易被消化酶所破坏,故可供作口服之用

C.可直接与胞浆内的受体结合而发挥生物效应

D.分子较大,不能透过细胞膜

答案

参考答案:D

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.

The best title for this passage would be ______.

A. The importance of Newspaper Topicality
B. The Characteristics of a Good Newspaper
C. The Variety of a Good Newspaper
D. Some Suggestions on How to Read a Newspaper

判断题