单项选择题

HALLMARK:

A．untypicalcharacteristic
B．prematureoccasion
C．unluckyevent
D．seriousproblem
E．worthlessitem
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单项选择题
Which of the following, if true, would cast most doubt on the conclusions drawn from Head's higher-resolution models
A．TheresultsofgeographicalsurveyprovethatnocraterlargerthantwelvekilometersexistsonthesurfaceofMars.
B．FragmentsfromsmallerimpacteventsonMarsarehighlyunlikelytosurviveentrythroughtheEarth'satmosphere.
C．ThevelocityofrocksescapingfromMar'sgravityisgreaterwhentheyhavebeenloosenedbyalargeimpact.
D．HugeimpactsonMarsareproventobelessrarethanwaspreviouslythought.
E．Adouble-successionoflargeimpactsisfoundtohaveoccurredonMarsinarelativelyshortperiodoftime.
单项选择题
In contrast to Goya's various representations of sincere tears, then, are a series of representations of insincerity and emotional -------.
A．confusion
B．machination
C．probity
D．fortuitousness
E．boldness
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