人体营养物质消化和吸收的主要器官是 A.口腔 B.食道 C.胃 D.小肠

题型:选择题

问题:

人体营养物质消化和吸收的主要器官是

A.口腔

B.食道

C.胃

D.小肠

考点:消化和吸收消化系统的组成和功能
题型:选择题

用洗衣机洗衣时水位高些容易洗干净,对吗

题型:选择题

在铁皮上镀一层锌时,可用如图的装置。以下叙述错误的是

A.电镀前,铁皮可用热碱溶液除油渍,盐酸除铁锈

B.c为铁,d为锌

C.用含Zn2+的盐配成电解质溶液

D.电镀时,发生氧化和还原反应的都是锌元素

题型:选择题

中度脱水累积损失量()

A.50ml/kg

B.50~100ml/kg

C.100~120ml/kg

D.120~150ml/kg

E.150~200ml/kg

题型:选择题

网络新媒体迅速发展使“人人都是通讯社、个个都有麦克风”的时代悄然到来。舆论信息随时随地互动传播,规模庞大的中国网民早已不再满足于从网上获取资讯,他们已经成为信息的创造者和传播者。由此可知,网民在互联网上可以行使的权利和自由包括(  )

①选举权和被选举权  ②言论自由  

③监督权 ④维护国家安全、荣誉和利益的权利

A.①②

B.③④

C.①④

D.②③

题型:选择题

Mark Twain was a great writer. He was from the USA. He was born in 1835. He was also a famous speaker. He was famous for his sense of humour. Many people liked to listen to him talk because he liked to tell some interesting stories to make people laugh all the time.   One day Mark Twain was going to a small town because of his writing. Before he was going to leave, one of his friends said to him that there were always a lot of mosquitoes in the town and told him that he’d better not go there. Mark Twain waved (摇动) his hand and said, “It doesn’t matter. The mosquitoes are no relatives of mine. I don’t think they will come to visit me.”

After he arrived at the town, Mark Twain stayed in a small hotel near the station. He went into his room, but when he was just about to have a rest, quite a few mosquitoes flew about him. The waiters felt very sorry about that. “I’m very sorry, Mr Mark Twain. There are too many mosquitoes in our town.” One of them said to him.

Mark Twain, however, made a joke, saying to the waiter, “The mosquitoes are very clever. They know my room number. They didn’t come into the wrong room.” What he said made all the people present laugh heartily.

But that night Mark Twain slept well. Do you know why? That was because all the waiters in the hotel were driving the mosquitoes away for him during the whole night.

65. That day Mark Twain went to the town _____.

A. to see one of his friends

B. because he wanted to do something there for his writing

C. because he was told there were a lot of mosquitoes there

D. to see one of his relatives

66. The waiters felt sorry because _____.

A. they did something wrong to Mark Twain   

B. their hotel was too small

C. the room was not very clean  

D. there were quite a few mosquitoes in Mark Twain’s room

67. All the people present laughed heartily because _____.

A. the mosquitoes were very clever and they didn’t come into the wrong room

B. the mosquitoes knew Mark Twain’s room number

C. Mark Twain gave the waiters some nice presents  

D. Mark Twain made a joke

68. From the story we know _____.

A. no mosquitoes troubled Mark Twain in the night

B. the owner of the hotel told the waiters to look after Mark Twain well at night

C. Mark Twain didn’t have a good rest that night

D. there were not mosquitoes in the hotel any longer

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