单项选择题

A. It may have a lot of fun.
B. It’s a good opportunity for people to know the society.
C. It’s one of the most difficult jobs.
D. It’s a challenge for people’s ability.
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单项选择题
A. By paying for meals one at a time. B. By borrowing a student’s meal card. C. By ordering their meals in advance. D. By buying a weekend meal card.
A. By paying for meals one at a time.
B. By borrowing a student’s meal card.
C. By ordering their meals in advance.
D. By buying a weekend meal card.
单项选择题
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.
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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