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单项选择题

A．It must be the right height.
B．It must have several gears.
C．It must have good tires.
D．It must be the right weight.
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单项选择题A．Hurry to the conference.B．Skip the conference.C．Take the subway.D．Take a bus.

A．Hurry to the conference.
B．Skip the conference.
C．Take the subway.
D．Take a bus.

单项选择题Public schools are softening their position on home schooling because________.

A．there isn’’t much they can go to change the present situation
B．they want to show their tolerance for different teaching systems
C．home schooling provides a new variety of education for children
D．public schools have so many problems that they cannot offer proper education for all children