单项选择题


What remains an important factor for the rising number of road accidents

A．Highway crime.
B．Poor traffic control.
C．Confusing road signs.
D．Drivers’ errors.
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单项选择题
The underlined word longevity in the second paragraph probably refers to ______ .
A．health
B．long life
C．aging
D．effect
单项选择题
What is true of Potter’s first lecture
A．There was an interesting start and a well-organized end.
B．There was a natural transition from its introduction to the following part.
C．The plan about the Western development was good.
D．The whole lecture was over-detailed and formless.
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