I am ______ of his chances of passing the examination because he has not worked

游客2023-09-06  30

问题 I am ______ of his chances of passing the examination because he has not worked hard enough.

选项 A、ambiguous
B、ambitious
C、dubious
D、rational

答案 C

解析 形容词辨义。这四个选项的词性都是动词,其中ambiguous表示“有多种意思的;意思含糊的”,如:an ambiguous reply(意思含混的答复);ambitious是指“野心勃勃的;有抱负的”,如:They are ambitious although they are poor.(他们虽穷却很有志气。)dubious表示“令人怀疑的;引起疑虑的;不可靠的;可能有问题的”,如:a dubious compliment(意义不明的恭维);rational表示“理性的,合理的,推理的”,如:a rational suggestion(合理的建议)。根据句意,对他是否能通过考试表示怀疑,应该选择 C)。
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