牛奶中铁的利用率为()。
A.50%~60%
B.40%~50%
C.30%~40%
D.20%~30%
E.<10%
参考答案:E
In the good care of the nurses, the boy is ___ recovering from his heart operation. [ ]
A. quietly
B. actually
C. practically
D. gradually
贯众的主治病症不包括()。
A.痄腮
B.风热感冒
C.寄生虫病
D.血热出血
E.水火烫伤