You should be .You mustn't take any unnecessary risks until you are quite sure. A.dynamic.B.desperateC.considerateD.cautious
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D解析试题分析:考查单词意思,dynamic意思“动态的”,desperate意思“绝望的”,considerate意思“体贴的”,cautious意思“小心的”,句子意思“你应该小心的,你禁止冒任何不必要的风险直到你非常确信的”考点:考查单词意思
点评:单词是常考内容,平时要多记多积累,遇到单词题时,知道它们的意思,就很容易做出正确选择