下列图示的实验中,正确的是() A . 二氧化碳的验满 B .称取氯化钠 C . 检验气密性 D . 稀释浓硫酸 答案:C19、---If there are ___factories pouring dirty water into
the river, there will __water pollution.
--- Yes, the water will be
cleaner.
A.less; less
B.less;
fewer
C.fewer;
fewer D.fewer;
less