单项选择题

ORIENT:

A．threaten
B．sully
C．puzzle
D．reject
E．quicken
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单项选择题
The passage suggests that which of the following is true concerning the probability that a given collision on Mars would eject fragments that will hit the Earth
A．Theprobabilityishigheriftheimpactproducesacraterlargerthanthreekilometers.
B．Theprobabilityisloweriftheimpactproducesacratersmallerthanthreekilometers.
C．TheprobabilityisdecreasedwhentheimpactcomesfromanareaofMarscoveredbydebris.
D．Theprobabilityisdecreasedwhenthefragmentsproducedbytheimpactarelargerthan10centimeters.
E．Theprobabilityisdecreasedwhenthefragmentsproducedbytheimpactareyounger.
单项选择题
DESECRATE:
A．intensify
B．confuse
C．integrate
D．sanctify
E．ponder
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