单项选择题

A．A space rocket can only be used once.
B．The pilot can fly a space plane just like an ordinary plane.
C．A space rocket travels much faster than a space plane.
D．Both A and B.
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单项选择题
A．He wanted to be put in prison again.B．He needed the money to support his family.C．He hated the barber there.D．He wanted to make himself well known.
A．He wanted to be put in prison again.
B．He needed the money to support his family.
C．He hated the barber there.
D．He wanted to make himself well known.
单项选择题
Seventy-five to 90% of all adults suffer adverse health effects from stress.
A．Y
B．N
C．NG
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