由元参、麦冬、犀角、银花、黄连、生地、连翘、竹叶心、丹参组成的方剂是（） A.犀角地

有三个整数a，b，c，由键盘输入，输出其中最大的数，画出其算法流程图.

南京国际航空烈士纪念馆宁波籍抗日英烈简表（部分）

分析上表，就其史料价值而言，无法佐证的是[ ]

A．社会上层青年为国家民族贡献抗日力量

B．美国支持和援助中国抗日

C．国民革命军将士在正面战场英勇抗日

D．国民政府作了抗日国防准备

氯丙嗪能明显降低体温，并有镇吐作用。（）

阅读理解。

     Time spent in a bookstore can be most enjoyable, whether you are a book-lover or merely you

are there to buy as a present. You may even have entered the shop just to find a shelter from a sudden

shower. Whatever the reason, you can soon become totally unaware of your surroundings. The desire

to pick up a book with an attractive "dust-jacket" is irresistible(不可抗拒的), although this method of

selection ought not to be followed, as you might end up with a rather dull book. You soon become

engrossed in some book or other, and usually it is only much later that you realize you have spend far

too much time there and must dash off to keep some forgotten appointment- without buying a book,

of course.

      This opportunity to escape the realities of everyday life is, I think, the main attraction of a book-shop. There are not many places where it is possible to do this. A music shop is very much like a bookshop.

You can wander around such places to your heart's content. If it is a good shop, no assistant will

approach you with inevitable greetings "Can I help you, sir?" You needn't buy anything you don't want.

In a bookshop an assistant should remain in the background until you have finished browsing(浏览).

Then, and only then, are his services necessary. Of course you may want to find out where a particular

section is, but when he has led you there, the assistant should retire carefully and look as if he is not

interested in selling a single bok. You have to be careful not to be attracted by the variety of books in

a bookshop. It is very easy to enter the shop looking for a book on ancient coins and to come out

carrying a copy of the latest best-selling novel and perhaps a book about brass-rubbing-something

that had only slightly interested you up until then. This sort of thing can be very dangerous. Apart from

running up a huge account, you can waste a great deal of time wandering from section to section.

1. What does the underlined part "dust-jacket" in the first paragraph probably mean?

A. The title of a book.

B. A kind of clothes.

C. Book cover full of dust.

D. Protecting paper cover of a book.

2. In the author's opinion, what is the main attraction of a bookshop?

A. You can spend much time in the bookshop.

B. It has many books with attractive dust-jackets.

C. It enables you to forget the realities of everyday life.

D. You don't have to go for unpleasant appointments.

3. According to the passage, what will happen in a good bookshop?

A. Nobody will take notice of you.

B. You will feel as if you were in a music shop.

C. You will find yourself undisturbed and satisfied with your browsing.

D. The assistant will greet and treat you in a very friendly way.

4. Picking up books that slightly interest you can be dangerous because ________.

A. you may forget about the book you plan to buy

B. it costs you too much money and time

C. it makes you break your appointment

D. you have to give up the best-selling book

回流比大小对纯度有什么影响？