导读：请教两道题The child (who, whom) we thought was lost was found in 请教两道题The child (who, whom) we thought was lost was found in the next book.The woman (who, whom) we thought to be (she, her) turne...
请教两道题The child (who, whom) we thought was lost was found in
请教两道题
The child (who, whom) we thought was lost was found in the next book.
The woman (who, whom) we thought to be (she, her) turned out to be her sister.
请问这两道题怎么选？为什么？ 请附上解释好吗 谢谢
雪小雪
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冷酷然后孤独
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该名网友总共回答了16个问题，此问答他的回答如下：采纳率：81.3%
1.A为CuCl2；B为Cu(OH)2；C为CuS；D为AgCl。CuCl2溶于水后水合铜离子，呈浅蓝色；在氯化铜溶液中加入NaOH溶液可得浅蓝色Cu(OH)2沉淀，Cu(OH)2能溶于盐酸，也能溶于氨水生成铜氨配离子。CuCl2溶液中通入H2S,有黑色CuS沉淀生成，CuS难溶于盐酸而溶于热浓HNO3中。CuCl2溶液中加入Ba(NO)3溶液，无沉淀生成，加入AgNO溶液时有白色AgCl沉淀生成...
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