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问题 单项选择题

灌注无牙颌石膏模型时，厚度不应少于多少毫米( )

A．1
B．3
C．5
D．7
E．10

答案

参考答案：E

解析： 模型边缘宽度以3～5mm为宜，最薄处不能少于10mm。

阅读理解
阅读理解。

      She is a cute, quiet girl. As a daughter, she has no secrets from her mother, who is very pleased with
her. But these days she has become not so open as before. She has a diary that she keeps under lock and
key (严密保管). Her mother cannot help worrying about her: what if she falls in love, which is too early
of her age? After all she is reaching the "dangerous time". These thoughts have caused trouble in the
mother's mind.
     One weekend the girl came to tell her mother that she was going to the cinema with her schoolmate
and would return late. This was the first time her mother agreed, and she couldn't help worrying because
her daughter had never been away at night before. The mother waited till nine. She decided to go out to
meet her daughter. Just at that time the noise of a car drew her to the window and---there was her
daughter, waving goodbye to a boy. Her heart missed a beat. When the girl came in, the mother was
watching TV, just like nothing had happened. "Mum, I'm back." "Yeah." "Sorry to be late. Still sitting up?"
 "Yes. Oh, that… Who's that boy?" The daughter was stunned (发楞) for some time. "Ah. It's my monitor.
He gave me a lift on his way home. Mum, I'm going to bed." "All right. Go to sleep early."
     Next morning when the mother went to the daughter's room to do some cleaning, she found her diary
left on the bed. After a few minutes'thinking, she at last opened it to the page of the night before. It reads:
Mum, it's love that made you ask, but it would show your understanding of me if you hadn't.
can't help doing sth: 禁不住做某事

1. Which is the correct order according to the story?
    a. She took a lift back in her monitor's car.
    b. She went to see a film with her classmate.
    c. She wrote a diary to her mother.
    d. Her mother was watching TV.
    e. Her mother worried about her daughter's returning late.
[ ]
A. b, e, a, d, c
B. e, b, a, d, c
C. b, a, e, d, c
D. b, e, a, c, d
2. Which of the following is TRUE according to the story?
[ ]
A. The girl knew her mother would ask her the question about the boy.
B. What the daughter did these days worried her mother.
C. The mother wanted to read her daughter's diary the next day.
D. The girl's diary was always on the bed.
3. From the diary, we can see the daughter ______.
[ ]
A. thanked her mother for asking her
B. thought her mother cared about her very much
C. thought it was her mother's duty to ask
D. thought her mother's understanding is better than simple love
4. The main purpose (目标) of this article is to show that parents should ______.
[ ]
A. care about what their children really think and feel
B. not give much freedom to their children
C. talk with their children about their early love
D. not read their children's diary
5. Which can be the best title for this story?
[ ]
A. Mother's True Love
B. Early Love Between Students
C. To Ask or Not to Ask
D. Dangerous Age
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填空题

给下列多音字注音：当：我们应当（）加强自我防范，才不会上坏人的当（）。
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