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中考英语练习：阅读理解专项训练第二节

　　Mary is a lovely, quiet girl. When she was a little girl, she had no secrets from her mother, who was very pleased with her. But since last year she has become a little mysterious and not so open as before. She wants heart-to-heart talks between mother and daughter. But they never happen. And a gulf opens between them.

　　Her mother wonders if she falls in love. It's too early for a girl for her age. After all, she is reaching the "dangerous stage". These thoughts have caused trouble in the mother's mind.

　　One weekend her daughter came to tell mother that she was going to the cinema with her classmates and would return late. This was the first tome her mother agreed., and she began to worry because her daughter had never been away at night before. The mother waited until nine and couldn't fall asleep. Then she decided to go out to meet her daughter. Just at that moment, she heard the noise of a car and hurried to the window-there was her daughter, waving good-bye to a boy. Her heart missed a beat. When the daughter came in, the mother was watching TV, pretending nothing happened." Mum, I'm back." "year," "Sorry to be late."

　　The daughter said nothing about the film and the boy. The mother really would like to know something about them.' Who is that boy?" Daughter was stunned（发愣）for a moment." Ah, it's my monitor. He gave me a lift on his way home. Mum I'm going to bed." "the daughter answered in careful words. "All right. Go to sleep early."

　　The next morning when the mother went to daughter's room to do some tidying, she found her diary left on her bed. After a few minutes' hesitation（犹豫）,she opened it to the right page. It reads; "Mum,  it's love that made you ask, but it would show your understanding of me if you hadn't. Holding the diary, the mother fell into thought.

　　46. What does the underlined phrase "missed a beat" in the third paragraph mean?

　　A. wanted to beat sb.

　　B. was too surprised to think of anything.

　　C. failed to find something

　　D. caused an illness.