单项选择题

In previous times, when fresh meat was in short ______, pigeons were kept by many household as a source of food.

A．store
B．provision
C．reserve
D．supply

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单项选择题

How close parents are to their children ______ a strong influence on the character of the children.

A．have
B．has
C．having
D．to have

单项选择题

From the situation described in the first paragraph, we know that （）

A．drivers should learn how to repair their own cars
B．driving alone on the highway can be very dangerous
C．one has to be very careful in handling a car emergency
D．this passage is intended for drivers facing an emergency