下列物质中可以用直接法配制一定浓度溶液的是()A、HNO3 B、NaOH C、H2S

题型:单项选择题

问题:

下列物质中可以用直接法配制一定浓度溶液的是()

A、HNO3

B、NaOH

C、H2SO4

D、KHP

考点:水环境监测工水环境监测工题库
题型:单项选择题

阅读理解。

     One day my wife and I went shopping at the shop. We took the car as we had a lot of things to buy

because my brother and his family were going to spend the weekend with us.   We stopped the car in

front of the shop. An hour later we came back to the car with a lot of things.  Then the trouble started.

We could not open the car door.  

     "Oh, dear," said my wife, "What are you going to do?"

     "Let's ask that policeman," I said. The policeman was very kind and glad to help us. A few minutes

later he got the door open.   Just at that moment an angry man came up and shouted,  " What are you

doing with my car?"

     We looked at the number of the car and our faces turned very red.

1. The husband and the wife went shopping ________.

A. by bus

B. in their car  

C. by bike

D. on foot

2. How long did they spend in the shop doing their shopping?

A. About half an hour.

B. A whole morning.  

C. One hour or so.

D. A whole day.

3. Who opened the car door in the end?

A. The husband.

B. The wife.

C. The policeman.

D. The angry man.

4. The man was very angry ________.

A. to see someone had opened his car door  

B. to see the policeman standing by the car

C. because he came to the car a bit late  

D. because he couldn't open the car door either

5. They didn't know it was the wrong car until they looked at ________.

A. the colour of the car  

B. the owner of the car  

C. the things in the car  

D. the number of the car

题型:单项选择题

结合给定资料中的具体事例,以“农村环境治理”为题目,自选角度,写一篇文章。
要求:
①中心明确,事实与观点紧密结合;
②语言畅达,条理清楚;
③总字数800~1000字。

题型:单项选择题

Questions 14-18


·Using, the information in the text, complete each sentence 14-18 with an expression from the list below.
·For each sentence (14-18). mark one letter (A-G) on the Answer Sheet.
·Do not mark any letter twice.
  • A. time zones
  • B. natural light
  • C. protection
  • D. discomfort
  • E. cost
  • F. essentials
  • G. motion sickness

You may join a medical foundation without any ______.

题型:单项选择题

俄罗斯前总统普京曾在一次公开场合抨击美国“几乎是毫无节制地滥用武力”。并且称美国所倡导的“单极世界”是不可接受的。这段材料表明

①美国在推行霸权主义政策②美国要保持世界霸主地位③“两极格局”依然存在④俄美两国存在分歧[ ]

A.①②④

B.①③④

C.①②③

D.②③④

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甲是保险经纪人,向乙推荐保险品种,后在甲的帮助下乙与丙保险公司办理了该种保险,后由于甲的过错致使投保方乙遭受损失的,承担赔偿责任的主体是( )。

A.投保人乙

B.保险经纪人甲

C.保险人丙

D.保险人丙与保险经纪人甲

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