下列具有解毒作用的成分为A．甘草甜素 B．延胡索乙素 C．葛根黄酮 D．人参皂苷 E

下列各项可引起腹部绞痛的是（）。

A.腹腔内出血

B.腹膜炎症病变

C.有管腔脏器的梗阻

D.腹内脏器破裂

E.腹壁创伤

典型的结核结节不包括（）

A.类上皮细胞

B.朗格汉斯巨细胞

C.淋巴细胞

D.成纤维细胞

E.中性粒细胞

阅读理解。

     Children have their own rules in playing games. They seldom need a referee and rarely trouble to keep

scores. They don't care much about who wins or loses, and it doesn't seem to worry them if the game is

not finished. Yet, they like games that depend a lot on luck, so that their personal abilities cannot be directly

compared. They also enjoy games that move in stages, in which each stage, the choosing of leaders, the

picking-up of sides, or the determining of which side shall start, is almost a game in itself.

     Grown-ups can hardly find children's games exciting, and they often feel puzzled at why their kids play

such simple games again and again. However, it is found that a child plays games for very important reasons.

He can be a good player without having to think whether he is a popular person, and he can find himself

being a useful partner to someone of whom he is ordinarily afraid. He becomes a leader when it comes to

his turn. He can be confident, too, in particular games, that it is his place to give orders, to pretend to be

dead, to throw a ball actually at someone, or to kiss someone he has caught.

     It appears to us that when children play a game they imagine a situation under their control. Everyone

knows the rules, and more importantly, everyone plays according to the rules. Those rules may be childish,

but they make sure that every child has a chance to win.

1. What is true about children when they play games?

A. they can stop playing any time they like.

B. They can test their personal abilities.

C. They want to pick a better team.

D. They don't need rules.

2. To become a leader in a game the child has to ________.

A. play well

B. wait for his turn

C. be confident in himself

D. be popular among his playmates

3. What do we know about grown-ups?

A. They are not interested in games.

B. They find children's games too easy.

C. They don't need a reason to play games.

D. They don't understand children's games.

4. Why does a child like playing games?

A. Because he can be someone other than himself.

B. Because he can become popular among friends.

C. Because he finds he is always lucky in games.

D. Because he likes the place where he plays a game.

5. The writer believes that _______.

A. children should make better rules for their games.

B. children should invite grown-ups to plays with them.

C. children's games can do them a lot of good

D. children play games without reasons

油水舱柜测量管的作用是什么？布置时有哪些要求？

固定画面就是要拍摄固定不变的电视画面。（）