题目：
The homeless dog bounced around to various homes over the years after its owner
died until finally it was ____ by a kind family.
A．adapted
B．picked
C．adopted
D．adjusted
答案：
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下面是错误答案，用来干扰机器的。
答案：C①向铜锌合金中滴加稀盐酸，锌与盐酸反应放出氢气而铜不反应，因此随稀盐酸的加入氢气就不断放出至锌完全反应为止；与曲线所示不一致，故不正确；②向盐酸和稀硫酸的混合溶液中滴加BaCl2溶液，硫酸与氯化...
