试题与答案

关于ag氢气和bg氦气的下列说法正确的是 A.同温、同压下,氢气与氦气的体积比为

题型:选择题

题目:

关于ag氢气和bg氦气的下列说法正确的是     

A.同温、同压下,氢气与氦气的体积比为a:2b

B.同温、同压下,若a=b,则氢气与氦气的物质的量之比为2:1

C.体积相同时,氢气的质量一定小于氦气的质量

D.同温同压下,若两者的体积相等,则其原子数也相等

答案:

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小题1:这首词蕴含的情感主要有:①久别重逢的喜悦;②宦海沉浮的悲惋无奈;③离别在即的愁绪。小题2:①想象奇特,虚实相生。词人忽发奇想,将本来荒僻的阆州点化为神仙阆苑,赋予阆州神话般的美丽。虚实处理得当...

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阅读理解。

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We lived downstairs and rented the upstairs rooms to out-patients at the clinic.

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awful looking man-no taller than my eight-year-old son-I thought as I stared at the shriveled (皱缩的) body.

But the shocking thing was his face-twisted from swelling.

     He told me he'd been hunting for a room since noon but with no success." I guess it's my face…, but my

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He didn't tell it by way of complaint; in fact, every other sentence began with a thanks to God for a blessing.

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      The next morning before he left for his bus, he asked if he could come back and stay the next time he

had a treatment. I told him he was welcome to come again.

     In the years he came to stay overnight with us, there was never a time that he did not bring us fish or

oysters or vegetables from his garden.

     When I received these little gifts, I often thought of a comment our next-door neighbor made after he left

that first morning." Did you keep that awful looking man last night? I turned him away. You can lose roomers

by accommodating such people!"

     Maybe we did lose roomers once or twice. But oh! If only they could have known him, perhaps their

illnesses would have been easier to bear. I know our family always will be grateful to have known him; from

him we learned what it was to accept the bad without complaint and the good with gratitude.

1. The first time I met the man, _____.

A. I felt pity for his look

B. he frightened my kid

C. he was in need of something to eat

D. he was looking for a place to stay overnight

2. The next-door neighbor refused the man because _____.

A. he might lose roomers

B. the man was poor

C. he had no spare room

D. the man didn't bring him gifts

3. Which of the following is NOT true about the man?

A. He developed skin cancer.

B. He fished to support a large family.

C. God helped him to get over his disease.

D. He didn't complain about his sufferings.

4. What attitude did the man have toward life?

A. Grateful.

B. Confident.

C. Regretful.

D. Passive.

5. What might be the best title of the passage?

A. Never judge a book by its cover

B. Give others a hand

C. Be the architect of life

D. Accept good and bad with gratitude

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题型:选择题

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C.工业上常用电解法制备元素C、D、E的单质

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