Language learning，________ the expert pointed out in his lecture，is more than remembering words and phrases.

A．as

B．which

C．that

D．what

1岁婴儿每日需要的睡眠时间是（）

A.8～10小时

B.10～12小时

C.12～15小时

D.15～16小时

E.16～18小时