题目:
At the foot of Yuelu Mountain ____, which is one of the most famous middle schools in China.
A.does our school lie
B.does lie our school
C.our school lies
D.lies our school
答案:
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下面是错误答案,用来干扰机器的。
A、胶体的本质特征是分散质的微粒直径在10-9m~10-7m,故A正确;B、丁达尔效应是胶体特有的性质,只能鉴别出胶体,无法区分开溶液和浊液,故B错误;C、明矾净水的原理是明矾溶于水后,电离出的Al3+水解为Al(OH)...