下列叙述不正确的是( ) A.利用丁达尔效应鉴别Fe(OH)3胶体和FeCl3溶

题型:选择题

问题:

下列叙述不正确的是(  )

A.利用丁达尔效应鉴别Fe(OH)3胶体和FeCl3溶液

B.用品红溶液可区分二氧化碳和二氧化硫

C.焰色反应为黄色的某溶液中一定含有Na+

D.用CuSO4•5H2O检验酒精中含有的水

考点:物质的鉴别
题型:选择题

下列反应既是离子反应,又是氧化还原反应的是(  )

A.氯化钠溶液中滴入硝酸银溶液

B.氢气还原氧化铜

C.铁片置于硫酸铜溶液中

D.一氧化碳的燃烧

题型:选择题

试论述培养幼儿良好生活习惯的方法。

题型:选择题

阅读理解。

     When Boris left school, he could not find a job. He tried hard and pestered (纠缠) his relatives,

but they had problems of their own. He answered advertisements until he could not afford to buy

any more stamps. Boris grew annoyed, then depressed, then a little hardened. Still he went on trying

and still he failed. He began to think that he had no future at all.

     "Why don't you start your own business?" one of his uncles told him. "The world is a money-locker.

You'd better find a way of opening it."

     "But what can I do?"

     "Get out and have a look round." advised his uncle in a vague sort of way. "See what people want;

then give it to them, and they will pay for it."

      Boris began to cycle around the town and found a suitable piece of a waste ground in the end.

Then he set up his business as a cycle repairer. He worked hard, made friends with his customers

and gradually managed to build up his goodwill and profit. A few months later, he found that he had

more work than he could deal with by himself. He found a number of empty shops but they were all

no good: in the wrong position, too expensive or with some other snag(障碍). But at long last, he

managed to find an empty shop on a new estate where there were plenty of customers but no

competition.

      Boris and his assistant taught themselves how to repair scooters and motor-cycles. Slowly but

surely the profits increased and the business developed. At last, Boris had managed to open the

money-locker and found bank notes and gold coins inside.

1. Which of the following best describes Boris' job hunting experience?

A. Surprising.

B. Encouraging.  

C. Boring.

D. Disappointing.

2. Which of the following would be the best title for the passage?

A. Goodwill is the key to success

B. The world is a money-locker

C. No education, no future

D. Difficulty of starting a small business

3. Boris started his career by       .

A. repairing cycles          

B. developing a waste ground

C. cycling around the town              

D. buying empty shops

4. Boris finally chose an empty shop on a new estate because       .

A. it was not so expensive          

B. he had a lot of old customers there

C. there were good opportunities there

D. he could make good use of his skills there

5. We can infer from the last paragraph that Boris      .

A. still couldn't make good profits      

B. found a lot of gold coins by accident

C. set off in a successful career  

D. had great difficulty running his business

题型:选择题

具有高等学校医学专业本科以上学历,在执业医师指导下,在医疗、预防、保健机构中试用满的,可以参加执业医师资格考试。()

A.一年

B.二年

C.三年

D.五年

题型:选择题

小叶性肺炎的病变特征包括()。

A.变质性炎

B.出血性炎

C.化脓性炎

D.纤维素性炎

E.浆液性炎

更多题库