单项选择题

A. It will reduce the amount of pollutants in the air.
B. It will increase the amount of unpleasant odors from vehicles.
C. It will eventually destroy the ozone layer.
D. It will reduce the cost of running large vehicles.
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单项选择题
A. They are made of metal and glass. B. They cost about $50.C. They are usually found on the roof. D. They look like sandwiches.
A. They are made of metal and glass.
B. They cost about $50.
C. They are usually found on the roof.
D. They look like sandwiches.
单项选择题
A. They can invite guests to meals at a reduced price.B. They receive cards that allow them to be served first.C. They can help decide what will be on the menu.D. They pay less per meal than those who eat there only part of the time.
A. They can invite guests to meals at a reduced price.
B. They receive cards that allow them to be served first.
C. They can help decide what will be on the menu.
D. They pay less per meal than those who eat there only part of the time.
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