题目内容

听力原文：M: Let' s go to Disneyland after supper, Sue.
W: That's a realty good idea, but I have to meet Mr Black at the airport.
What will Sue do after supper？

A. To meet Mr Black.
B. To visit Disneyland.
C. To visit an airport.

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导向支架或滑动支架的滑动面应洁净平整，不得有()现象。

A. 无阻或扭曲
B. 无阻或变向
C. 歪斜和卡涩
D. 歪斜和扭曲

听力原文：W:Hello,Tom. Where are you going？
M:Hello,Julia! I'm going to my aunt's.
W:Is that box heavy？
M:No, it' s light.
W:But it's filled with books! Can I help you？
M:Of course. Could you open the door,please？
W:OK.
M:Thanks.
What was in the box？

A lot of books.
B. A book.
C. Some paper.

听力原文：M. Peter began to swim in 1980 and he joined a swimming club in 1982.
W: Yes, I know. He set a new world record in 1997.
When did Peter set the world record？

A. In 1998.
B. In 1997.
C. In 1992.

有三个相互独立的投资方案甲、乙、丙，所有方案寿命均为10年，残值为0，基准收益率10%，可利用资本为18万元，项目有关数据见表3-2。
则最优方案组合为()。

A. 甲+乙+丙
B. 乙+丙
C. 甲+丙
D. 甲+乙