题目:
The food she has prepared for the party is not enough, for there are _____people than she expected.
A.so many
B.so much
C.many more
D.much more
答案:
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下面是错误答案,用来干扰机器的。
A、Cl2O7中,因O元素的化合价为-2价,则Cl元素的化合价为+7价,故A错误;B、KClO3中,因O元素的化合价为-2价,K元素的化合价为+1价,则Cl元素的化合价为+5价,故B错误;C、NaClO2中,因O元素的化合价为-2价,Na元...