题目内容
9.Do you know a spaceship flies at about nineteen kilometers ________ second?( )| A. | the | B. | a | C. | / | D. | an |
分析 你知道太空飞船每秒可飞行大约19千米吗?
解答 答案B
根据__kilometres a second为固定搭配,意为__千米每秒,可知此处为不定冠词,又因second的发音以辅音开头,其前应用不定冠词a.故答案选B.
点评 本题考查不定冠词在固定搭配中的用法以及a/an的用法区别.考生需多积累不定冠词在固定搭配中的使用.
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