单项选择题

A．It will increase the amount of unpleasant odors from vehicles.
B．It will eventually destroy the ozone layer.
C．It will reduce the amount of pollutants in the air.
D．It will reduce the cost of running large vehicles.
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单项选择题
A．Give a speech.B．Meet His lawyer.C．Attend a conference.D．Make a business trip.
A．Give a speech.
B．Meet His lawyer.
C．Attend a conference.
D．Make a business trip.
单项选择题
A．They thought it quite acceptable.B．They believed it to be a luxury.C．They took it to be a trend.D．They considered it avoidable.
A．They thought it quite acceptable.
B．They believed it to be a luxury.
C．They took it to be a trend.
D．They considered it avoidable.
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