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单项选择题

How did the man travel

A．By plane.
B．By bus.
C．By train.
D．By car.

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热门试题

单项选择题What can we learn about the Kremers from the dialogue

A．They are coming home from a vacation.
B．They are David’s relatives.
C．They asked David to prepare dinner before they arrived at home.
D．They rent a room to David in their house.

单项选择题At the end of the passage the author suggests that ______.

A．it is impossible for life to exist on planets
B．earthlike life could only exist on a few planets
C．life could exist on only one planet in a million
D．life could exist on a great number of planets