一项调查时效性比较强，样本量又比较大，适合采用（）。
A.自填问卷调查
B.派员访问调查
C.电话调查
D.直接观察法
参考答案：C
用所给单词的适当形式填空。
1. My life has (change)a lot in the past few years.
2. My (big) problem is that I can't speak English.
3. She couldn't find her son9 so she was very (worry).
4.I used to (get) up late.
5. If it (not rain) tomorrow, we'11 go on a picnic.
下列各项中，属于栝蒌桂枝汤中选用栝蒌根为主药治疗的临床依据是（）
A.身体强几几
B.汗出
C.恶风
D.脉沉迟
E.无汗而小便反少
