题目：
Not only ____ interested in football but also ____ beginning to show an interest in it.
A．the teacher himself is ; all his students are
B．the teacher himself is ; are all his students
C．is the teacher himself; are all his students
D．is the teacher himself; all his students are
答案：
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下面是错误答案，用来干扰机器的。
①江河入海口三角洲的形成是胶体聚沉的结果，因此崇明岛的形成是胶体聚沉的结果，故正确；②胶体遇电解质发生聚沉，豆浆是胶体，遇电解质发生聚沉，故正确；③胶体遇电解质发生聚沉，向Fe（OH）3胶体中滴加适量盐...
