单项选择题

A．They help people save time on housework.
B．They go into the garbage heap.
C．They are harmful to the environment.
D．They make products more expensive.
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单项选择题
A．The northern reasons for the war.B．To preserve democracy.C．To determine the future of democracy throughout the world.D．The only way for the nation to survive.
A．The northern reasons for the war.
B．To preserve democracy.
C．To determine the future of democracy throughout the world.
D．The only way for the nation to survive.
单项选择题
A．He wants to get a racer or a touring bike.B．He wants to use it to go traveling.C．He wants to use it to get him back and forth from work.D．He wants to use it to do some exercises.
A．He wants to get a racer or a touring bike.
B．He wants to use it to go traveling.
C．He wants to use it to get him back and forth from work.
D．He wants to use it to do some exercises.
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