单项选择题

A．They can be used to do business with people.
B．They can be used to express all kinds of feelings.
C．They can be used to deliver all the messages in our life.
D．They can be used to convey our most important messages to people.
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单项选择题
A．Find a quiet place to study.B．Change the conditions of his room.C．Find a more comfortable place to study.D．Avoid distractions while studying in his room.
A．Find a quiet place to study.
B．Change the conditions of his room.
C．Find a more comfortable place to study.
D．Avoid distractions while studying in his room.
单项选择题
A．Jogging is better than the other types of exercise.B．Heart disease is no longer an American national problem.C．Jogging can be harmful if the runner is not properly prepared.D．Warm-up suits are better than gym shorts and T-shirts for joggers.
A．Jogging is better than the other types of exercise.
B．Heart disease is no longer an American national problem.
C．Jogging can be harmful if the runner is not properly prepared.
D．Warm-up suits are better than gym shorts and T-shirts for joggers.
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