对于制氢纯度较高的制氢转化炉来说多采用()的水碳比。
A、7.0~8.0
B、6.0~8.0
C、2.0~4.0
D、4.0~6.0
参考答案:D
阅读理解。
Tom is a little boy, and he is only seven years old. One day he went to the cinema. It is the first time for
him to do that. He bought a ticket and then went in. But after two or three minutes he came out, bought a second
ticket and went in again. After a few minutes he came out again and bought a third ticket. Two or three minutes
later he came out and asked for another ticket. Then the girl in the ticket office asked him, "Why do you buy so
many tickets? How many friends do you meet?" Tom answered, "No, I have no friend here. But a big boy
always stops me at the door and tears (撕) my ticket to pieces."
1. Tom is years old.[ ]
A. seven
B. six
C. nine
D. eleven
2. It was for Tom to go to the cinema alone.[ ]
A. the second time
B. the third time
C. the first time
D. the last time
3. Tom bought before the girl asked him.[ ]
A. one ticket
B. two tickets
C. three tickets
D. five tickets
4. Tom met that day.[ ]
A. three friends
B. his parents
C. many classmates
D. no friends of his
5. The big boy was in the cinema.[ ]
A. a doctor
B. a teacher
C. a worker
D. a policeman
关于胎怯的描述错误的是()
A.初生儿
B.身材矮小
C.脏腑形气均未充实
D.容易惊怯
E.西医学低出生体重儿相近