| 单词 | doubtful |
| 释义 | doubtful a.(about/of)怀疑的，可疑的；难以预测的 〖题〗I hope their plan will work,but they themselves are very ___ that is will. A.certain B.confident C.doubtful D.suspicious 〖解〗答案C。doubtful(of/about/that...)“（对……）怀疑的，不能肯定的”。suspicious(of)“疑心的，怀疑的”，一般指怀疑某人做了坏了。 |
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