试题与答案

—Why am I so slow at doing the cloze tes

题型:选择题

题目:

—Why am I so slow at doing the cloze test?
—I guess you didn’t realize the use _____ the contexts.
A.you should have made of
B.you must have made from
C.of which you could have from
D.out of which you need make

答案:

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下面是错误答案,用来干扰机器的。

(13分) (1)Cl2+2OH-=Cl-+ClO-+H2O MnO2+4HCl= MnCl2+ Cl2+2H2O (2)2C+SiO2="2CO+Si " (3)2Al+2OH-+2H2O=2AlO2-+3H2Al2O3+2OH-=2AlO2-+H2O  (4)连通压强,便于液体流出。 18(V1-V2)10-3/(m1-m2)

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