单项选择题


Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A．To drive the train after it is started automatically.
B．To start the train and to drive it when necessary.
C．To take care of the passengers on the train.
D．To send commanding signals to the command spot.
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单项选择题
A．10 points.B．2 points.C．15 points:D．5 points.
A．10 points.
B．2 points.
C．15 points:
D．5 points.
单项选择题
A．It changes the body’s metabolism through rapid weight gain.B．It tricks the body into responding as if it were in a different time zone.C．It promotes increased alertness by adding snacks to the diet.D．It builds resistance to illness by increasing intake of vitamins.
A．It changes the body’s metabolism through rapid weight gain.
B．It tricks the body into responding as if it were in a different time zone.
C．It promotes increased alertness by adding snacks to the diet.
D．It builds resistance to illness by increasing intake of vitamins.
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