对多种肠道线虫均有杀灭作用的药物是 A．乙胺嘧啶 B．利福平 C．阿苯达唑 D．甲硝

阅读理解。

     From the time we were babies we have been taught manners. We are taught how to hold a knife and fork

and not to talk with our mouths full. We are taught how to shake hands and when to stand and when to sit

and the way to introduce people.

     Sometimes good manners in one place are very bad manners somewhere else. Almost everywhere eating

together means that people are very friendly to each other. But in parts of Polynesia (波利尼西亚) it is bad

manners to be seen eating beside each other. So they politely turn their backs to each other when they are

taking food.

     Some East Africans spit four times as a kind of blessing (祝福). They do it to show that they want a sick

person to get well, or to bless a new-born baby. In most other places,spitting means something completely

different. It usually shows an unhealthy habit. In many countries,it may mean that you hate someone.

     When we go to visit someone we say "Hello!"Or "How are you?" or things like that. But if you are visiting

an East African village, everyone will be very careful not to pay attention to you. The polite thing there will be

for you to go quietly, without speaking to anyone, and sit beside your friend. You should wait until he has

finished what he is doing and then he will begin talking to you.

     In a village in Arab, a visitor will walk behind all the tents until he gets to the one he wants to visit. If he

passes in front, he will be invited into each tent and asked to eat. It is rude to refuse.

1. From this passage we know _____. 

A. it's good manners to use a knife and fork to eat

B. it's bad manners to stand and talk

C. it's good manners not to talk with our mouths full

D. how to shake hands when we introduce people

2. In many places,spitting may mean _____. 

A. you give a new-born baby the blessing

B. you want a sick person to get well

C. you hate someone

D. you show your love to your relatives or friends

3. If you visit an East African village, you _____. 

A. should say "Hello!" or "How are you?" to others

B. should talk to the villagers quietly

C. should be very careful and not to pay any attention to others

D. must wait until your friend has finished his work and then begin to talk to him

审核按其对象的不同可分为( )。

A．产品审核

B．过程审核

C．体系审核

D．安全审核

E．环境审核

关于新闻组的特点，下列哪个说法是不正确的？（）

A．用户每次利用新闻组客户端软件下载的都是新标题和新文章，除非用户指定，否则不会重复下载。

B．访问新闻组和浏览主页、发送电子邮件、下载和Ftp上传文件不能同时进行，相对增加了上网费用。

C．理论上，用户可以一次将新闻组服务器上的所有新闻组的全部标题和文章下载至本地硬盘，信息量非常大，而且所下载文章的时间跨度大。

D．切断网络连接后，用户可以在本地阅读、回复文章，这些离线操作无须支付上网费用。

信息主体发现信息存在异议时，（）向信息提供者直接提出异议。

A.可以

B.不可以

C.在一定条件下可以

屋面防水分为几个等级，其防水层分别为几年？