服务人民的要点是（），爱憎分明，除害安良。 A.听党指挥，不耍特权 B.热爱人民，甘

选出下面不是近义词的一组[ ]

A、光明磊落——光明正大 

B、视死如归——宁死不屈

C、锲而不舍——坚持不懈

D、万古长存——昙花一现

已知：水仅由H、O两种元素组成，氢、氧的相对原子质量分别为1和16；在t℃和1.01×10⁵Pa时，氢气的密度为m g•L^-1，氧气的密度为n g•L^-1．根据在t℃和1.01×10⁵Pa时水的电解实验：水→1体积氧气+2体积氢气，可推知水的化学式为（原子个数用m、n表示）______．

下列朝代中，发生“焚书坑儒”事件的是（）。

A.商

B.周

C.汉

D.秦

Everyday we go to school and listen to the teacher, and the teacher will ask us some questions. Sometimes, the classmates will ask your opinions of the work of the class. When you are telling others in the class what you have found out about these topics, remember that they must be able to hear what you are saying. You are not taking part in a family conversation or having a chat（闲谈）with friends—you are in a slightly unnatural situation where a large group of people will remain silent, waiting to hear what you have to say. You must speak so that they can hear you—loudly enough and clearly enough but without trying to shout of appearing to force yourself.

Remember, too, that it is the same if you are called to an interview whether it is with a professor of your school or a government official who might meet you. The person you are seeing will try to put you at your ease（轻松）but the situation is somewhat（一点儿）different from that of an ordinary conversation. You must take special care that you can be heard.

小题1:When you speak to the class, you should speak ________.

A．as loudly as possible

B．in a low voice

C．loudly

D．forcefully小题2:Usually, when you speak to the class, the class is __________.

A．noisy

B．quiet

C．having a rest

D．serious小题3:The situation in the class is ________ that in your house.

A．not very different from

B．sometimes the same as

C．sometimes not the same as

D．not the same as小题4: If you are having a conversation with an official, the most important thing for you is _______.

A．to show your ability

B．to be very gentle

C．to make sure that you can be heard

D．to put the official at ease小题5:The main idea of this passage is ________.

A．that we must use different ways at different situations

B．that we must speak loudly

C．that we must keep silent at any time

D．that we must talk with the class

做烤瓷修复体时，首先应在可卸代型上涂布

A．液体石蜡
B．石膏强化剂
C．蜡型分离剂
D．间隙涂料
E．蜡