产褥期一般所需的时间是产后（）

A.3～5天

B.10天

C.14天

D.2～3周

E.6周

It became a key feature of the Oral Approach in the 1960s that （）.

A. new language points are introduced and practised in situations

B. accuracy is maintained

C. reading and writing are introduced later

D. translation should be avoided