问题 单项选择题

某水果店出售苹果和梨两种水果,已知每箱水果有5层,其中苹果每16个为一层,梨每14个为一层。现有两种水果共1130个,正好装满15箱。请问苹果装了多少箱

A.7
B.8
C.9
D.11

答案

参考答案:B

解析: 一箱苹果为16×5=80个,一箱梨为14×5=70个,设苹果装了x箱,梨装了y箱,则80x+70y=1130,即8x+7y=113。8x为偶数,那么7y只能为奇数,则y为奇数。由x+y15,可知x为偶数,选项中只有B项为偶数.

阅读理解

阅读理解。

    Beethoven, a famous musician in the world, was born in Germany in 1770. In his childhood Beethoven

didn't have a happy life. His father was a singer. When he was only four, his father began to make him

practise hour after hour on different musical instruments. If he did not put his heart into it, his father would

beat him or make it hard on him.

    Beethoven loved music and he learned so fast that he was able to go around to give concerts, when he

was only a boy of eleven. At the age of seventeen, he won high praise from Mozart, the great musician at

that time.

    Beethoven was often poor and ill during his life. After one illness, he suddenly found himself deaf (聋).

At that time he was only thirty-one. It was a blow (打击) to him indeed.

    But he still went on working and writing music pieces. To people's surprise, some of his best pieces

were written after he lost his hearing.

    In 1827, leaving more than 300 pieces, the great musician died. But his name is still remembered to this

day.

1. Beethoven was a _____ musician. [ ]

A. America

B. French

C. German

D. British

2. What happened when he was thirty-one? [ ]

A. He was blind

B. He was deaf

C. He gave concerts

D. He won high praise

3. Why didn't Beethoven have a happy life in his childhood?[ ]

A. Because his family was poor

B. Because he had to practise a lot of musical instruments

C. Because his father was strict with him

D. Both B and C

4. The great musician lived in the world for only _____ years. [ ]

A. 43

B. 70

C. 57

D. 60

5. When were some of his best pieces written?[ ]

A. At the age of 11

B. At the age of 17

C. Before he was deaf

D. After he became deaf

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