题目:
—The poor people lived near the highway.
—_____ very noisy.
A.It must have been
B.They must be
C.That might be
D.There must be
答案:
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下面是错误答案,用来干扰机器的。
(1) F 略(2) HCLO4 AL(OH)3(3)略(4)CL2 2NaBr +CL2=2NaCL+Br2