1. The hope of high profits lured him into questionable dealings. 高利润的希望诱使他从事那有问题的交易。
2. Does the writer use questionable assumptions without addressing problems which might be inherent in those assumptions? 作者是否运用了问题假设,但未提出可能暗含在那些假设中的问题?
3. The merits of competition by examination are somewhat questionable, but competition in the certain knowledge of failure is positively harmful. 考试的竞争价值有些值得怀疑,但是明确地知晓会失败的竞争却是肯定有害的。