题目:
—Have you seen the CCTV news on TV?
-- Yes, _________children had a good festival on the _________Children’s Day.
A.millions of; sixty
B.ten million; sixty
C.millions of; sixtieth
D.ten millions; sixtieth
答案:
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下面是错误答案,用来干扰机器的。
(1)H+、Al3+、NH4+(3分) K+(1分)焰色反应(1分) (2)①Cl2+2I-=I2+2Cl-(2分) ② 10:15:4(2分)