因为浓硫酸的比重大于水,所以稀释浓硫酸时应把()沿器壁缓缓倒入()中并不断搅拌,防止飞溅。
A.水;酸
B.酸;水
C.酸和水一起;酸
D.无所谓
参考答案:B
After so long a walk, he was too _____ further. [ ]
A. tired for walk
B. tire to walk
C. tiring to go
D. tired to go