题目

-Have you ever been to Shanghai? -Of course. Actually, I _________there for six years but now I live in Taizhou. A. worked              B. was working         C. would work          D. have worked 答案:A 【解析】句意:— —你去过上海吗? — —当然。实际上,我在那里工作了六年,但现在我住在台州。A为一般过去时;B为过去进行时;C为过去将来时;D为现在完成时。根据Actually, I _________there for six years but now I live in Taizhou. 实际上,我在那里工作了六年,但现在我住在台州。可知,我是六年前在上下列表示对应化学反应的离子方程式正确的是( )A. 向稀HNO3中滴加Na2SO3溶液:SO+2H+===SO2↑+H2OB. 向Na2SiO3溶液中通入过量SO2:SiO+SO2+H2O===H2SiO3↓+SOC. Ca(ClO)2溶液中通入SO2气体:Ca2++2ClO-+SO2+H2O===CaSO3↓+2HClOD. 向CuSO4溶液中加入Na2O2:2Na2O2+2Cu2++2H2O===4Na++2Cu(OH)2↓+O2↑
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