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.

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单项选择题

DESECRATE:

A．intensify
B．confuse
C．integrate
D．sanctify
E．ponder

单项选择题

According to the passage, Ware's theory of the role of weather in the Anasazi evacuation differs from the position traditionally held by anthropologists in which of the following ways

A．Warereliesuponadifferentbodyofevidencethanpreviousanthropologisthave,butreachesthesameconclusions.
B．Wareascribesalessdominantroletoweatherthanhadbeentraditionallypositedbyanthropologists.
C．Wareascribesamoredominantroletoweatherthanhadbeentraditionallypositedbyanthropologists.
D．Warebelievesweatherplayedaroleintheevacuation,butnottheonetraditionallycited.
E．WarebelievesthatanotherfactorbesidesweatherwasresponsiblefortheGreatDrought.