单项选择题

Questions 22 to 25 are based on the conversation you have just heard.

A．In all, forty technicians were sent to the launch.
B．Some specialized technicians were sent to prevent accidents.
C．All the technicians overland were sent to Marblla in six Range Rovers.
D．About half as many technicians as cars were sent to the launch.
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单项选择题
A．They learned to save as thrifty as their parents.B．They spend money quickly and impulsively to avoid higher prices.C．They put most of theft money into their savings accounts.D．They spend some money and save some.
A．They learned to save as thrifty as their parents.
B．They spend money quickly and impulsively to avoid higher prices.
C．They put most of theft money into their savings accounts.
D．They spend some money and save some.
单项选择题
The word hypothese ( Line 3, Para. 2 ) means ______.
A．explanation
B．assumption
C．fact
D．phenomenon
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