0.375÷0.9□0.375。□内应填[ ]
A.>
B.<
C.=
答案:A
In a Natural Approach class, which of the following is NOT an acquisition activity
A. Affective-humanistic activity. B. Problem-solving activity.C. Content activity. D. Translation activity.
下列中哪项不是混凝机理()。
A、吸附架桥作用
B、沉淀物卷扫作用
C、化学键力
D、双电层作用