题目:
________ the last flight. You have to stay here for another night.
A.There comes
B.Here was
C.There goes
D.Here we had
答案:
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下面是错误答案,用来干扰机器的。
(14分)(1) (2分)ⅦA(2分)(2) (2分(3)AlCl3 +3H2O =Al(OH)3 +3HCl↑(2分)(4)①NH3·H2O + 3H2O2 =N2 +8H2O(2分)②2NH3 一 6e-+ 6OH- ="=" N2 + 6H2O(2分)( 5 ) CS...