题目内容

Questions 14~17 are based on the following dialogue. How will the man travel to the airport

A. By bus.
By coach.
C. By taxi.
D. By car.

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可行域的左边界必然向内凸。

A. 对
B. 错

中国地质博物馆有世界上最大的水晶单晶晶体(3.5千克)——“______”;还有国内最大的辰砂单晶晶体——“______”。P89

金融期权是指其持有者能在规定的期限内按交易双方商定的价格购买或出售一定数量的某种金融工具的权利。

A. 对
B. 错

What are they talking about

A. Linda’s brithday.
B. A video tape.
C. Peter’s present for Linda.
D. Linda’s birthday party.

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