题目

根据句意，用括号中所给词的适当形式填空。 1. She wants to be a _________ (science) when she grows up. 2.Teachers often encourage         (we) to get over the difficulties in life. 3.Don’t fall             (sleep) in class.     4.Can you tell me what your                (decide) is? 5.Students should take part in some                (organize) activities. 6.Talking loudly is                 in public place.( polite) 7.Would you mind not                (smoke) here? 8.It’s ha已知向量，记．（1）求函数f（x）的最小正周期；（2）求f（x）的单调增区间．