请结合下列实验常用装置,回答有关问题。 (1)写出图中标有字母的仪器的名称:a

题型:问答题

问题:

请结合下列实验常用装置,回答有关问题。

(1)写出图中标有字母的仪器的名称:a          

(2)实验室用氯酸钾和二氧化锰制取氧气,应选用的发生装置是        ,反应的化学方程式是                                     

(3)实验室制取二氧化碳的反应方程式为                                。若要获得干燥的二氧化碳,除发生装置外,还应选用D装置,并在该装置中盛放         (填写试剂名称)。如果用E装置收集该气体,则气体从           端进入(填“b”或“c”)。

(4)实验室常用装置C代替装置B制取气体,该装置的优点是通过开关活塞来控制反应的开始和停止,下列反应适用于该装置的有           (填序号)。

①大理石和稀盐酸    ②过氧化氢溶液与少量二氧化锰粉末      ③锌粒与稀硫酸 

考点:氧气的制取和收集氢气的制取和收集二氧化碳的制取和收集实验室制取和收集气体的思路
题型:问答题

阅读理解。

     Television is good. You'd like to watch it all day and all night. But too much TV is a very bad thing. Scientists found

that kids who watch too much TV may have more trouble learning to read. They can't focus on (专注于) their work.

     Kids learn language skills best by reading, talking and playing with others.If they spend too much time watching TV,

they'll have less time for those things. Watching too much TV is bad for people's health. People don't move much while

watching TV.What's more, they may eat a lot of food while watching.This can make them fat.We call these people"couch potatoes". Fighting on TV is a big problem for kids.Young people are good at following.Scientists have found that those

who watch a lot of fighting shows are more likely(可能的) to fight.

1. Scientists say if kids watch too much TV, they will _____.

A. learn language skills more easily

B. be healthier

C. find it hard to learn to read

D. eat less food

2. Kids learn language skills best by_____.

A. reading

B. talking

C. playing with others

D. all of the above

3. While watching TV, what DON'T people do?

A. Eat a lot of food.

B. Have less time for reading.

C. Hardly move.

D. Focus on their work.

4. Which of the following is true?

A. An American child will watch 12,000 fighting acts on TV a year.

B. It's good for kids to learn from fighting acts on TV.

C. Too much TV is good for people's health.

D. It's easy for kids who watch a lot of fighting shows to fight.

5. "Couch potatoes" are people who watch too much TV and become _____. 

A. thin

B. fit

C. fat

D. strong

题型:问答题

胃痛暴作,甚则拘急作痛,得热痛减,遇寒痛增,口淡不渴,或喜热饮,苔薄白,脉弦紧。治法是()

A.疏肝理气,和胃止痛

B.温胃散寒,理气止痛

C.健脾益气,温中和胃

D.活血化瘀,和胃止痛

E.疏肝泄热,和胃止痛

题型:问答题

一个修路队修一段公路,原计划每天修3.2千米,15天修完。实际每天比原计划每天多修0.8千米,实际多少天就修完了这段公路?下面列式正确的是[ ]

A.3.2×15÷0.8

B.3.2×15÷(3.2-0.8)

C.3.2×15÷(3.2+0.8)

题型:问答题

翻译文中划横线的句子。(10分)

(1)筑室百楹于安亭江上,堂字闳敞,极幽雅之致。题其匾曰“世美”。四明杨太史守阯为之记。(5分)

(2)然亦自爱其居闲靓,可以避俗嚣也,乃谋质金以偿粥者;不足,则岁质贷;五六年,始尽雠其直。(5分)

题型:问答题

会计科目的设置原则有哪些

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