单项选择题

Beck thinks it is ____________ for the government to set a base price.

A．helpful
B．reasonable
C．wrong
D．necessary
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单项选择题
Which of the following is true according to the report
A．The spacecraft will fly direct to Mercury.
B．The spacecraft will fly three times past Mercury.
C．The spacecraft was launched a week later than planned.
D．There is no specific task for this journey.
单项选择题
According to Beck, children on the farm have all the following advantages EXCEPT that
A．they are more responsible
B．they are more self-reliant
C．they know how to work
D．they are more sophisticated
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