洗衣机有强洗和弱洗功能,使用弱洗功能和强洗功能哪种更省电?()
A、强洗功能更省电
B、弱洗功能更省电
C、不知道
参考答案:A
We still remember once round the famous tower when we were young.
A.having taken
B.to be taken
C.to have taken
D.having been taken
可引起肝脏疾病的主要有()。
A.钙
B.铜
C.钾
D.钠
E.铁