第32题: [单项选择]间接致癌物是() A. β-丙烯内酯 B. β-萘胺 C. 镍 D. 佛波酯 E. 己烯雌酚 参考答案:B 答案解析:β-萘胺属于间接致癌物
第33题: [单项选择]If it had not been for my family's care I ______ to you now. A. will not speak B. would not have spoken C. would not be speaking D. should not have spoken 参考答案:C 答案解析:如果不是由于家人的照顾,我现在就不会和你在讲话了。本题考查混合虚拟语气的用法,尽管从句中是对过去情况的虚拟,但主句中有明显的时间标志now,故选择表示进行时的C项。