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2.-She looks very excited.She __________have won the first prize.
-I guess so.She is a born winner.(  )
A.mustB.couldC.shouldD.might

分析 --她看上去很兴奋.她肯定是赢得了一等奖.
--我想是的.她是一个天生的赢家.

解答 答案是A.本题考查表示推测的情态动词的用法.情态动词must表示推测只能出现在肯定句中,表示有客观依据的推测"准是,一定是".could表示推测往往出现在否定句或疑问句中;should表示推测时往往表示"按照常理常规的推测",表示"按照道理应该…";might表示推测往往出现在肯定句或否定句中表示不太肯定是推测"也许";本题中由上文的客观依据"她看上去很开心",推测"她肯定是得到了一等奖",所以答案是A.

点评 要在正确理解情态动词的基本含义的基础上,整体理解语境中的情感态度,做出合理的判断.

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