单项选择题

A beam of light will not bend round comers unless made to do so with the help of a reflecting device.（）

A.除非有反射装置的帮助，使得光线在拐弯处弯曲，否则光线是不会弯曲的。
B.光线在拐弯处将不会弯曲，除非在反射装置的帮助下使它弯曲。
C.如果不用反射装置使光线弯曲的话，光线在拐弯处是不会弯曲的。
D.即使有反射装置的帮助，光线在拐弯处也不会弯曲。

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问答题

Next monday we’ll have a day long discussion at the conference room in this hotel. Lunch and supper will be served in the cafeteria. We’ll exchange our respective evaluations, feasible reports and some preliminary plans. If there’s something we can agree upon, we can compile memos for further discussion.

单项选择题

The writer of the passage intends to tell us that（）.

A．he believes the story "In the Kingdom of the Seals"
B．we should know something about seals and not kill them
C．Donald A. Mackenzie knows a lot of the seals
D．seals are clever animals