单项选择题

A．Reduce the cost of a silencer.
B．Make a silencer unnecessary.
C．Improve the performance of a silencer.
D．Make a car quieter.
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单项选择题
A．He suggests working with the school board.B．He suggests starting the project from his hospital.C．He suggests making the project more popular.D．He suggests going to the school to spread the project.
A．He suggests working with the school board.
B．He suggests starting the project from his hospital.
C．He suggests making the project more popular.
D．He suggests going to the school to spread the project.
单项选择题
A．Some major problems the students will face in the future marriage.B．Some common problems that take place everyday.C．Some problems about the divorce.D．All above-mentioned.
A．Some major problems the students will face in the future marriage.
B．Some common problems that take place everyday.
C．Some problems about the divorce.
D．All above-mentioned.
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