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borrow, for buy, from buy, for borrow, from
CuS不溶于弱酸，能溶于强酸 CuS不溶于非氧化性酸，能溶于氧化性酸 CuS溶于硝酸，是因为硝酸氧化性强于硫酸，S2-被氧化，使溶解沉淀平衡往溶解方向移动 CuS溶于硝酸，是因为硝酸的酸性大于硫酸和盐酸的酸性，S2-结合H+，放出H2S气体，使溶解沉淀平衡往溶解方向移动
supermarket shop school market
lies, there lied, to school lying, home to lie, to the shop
sells sell are sold is sold
lies，there lied，to school lying，home to lie；to the shop
closed been closed been open opened
In a library In a shop In a bank In a school
open is open close is close
is open; opens opens; is open is opening; is open opens; is opening
In a library In a shop In a bank In a school
CuS、HgS、MnS、ZnS HgS、CuS、ZnS、MnS MnS、ZnS、CuS、HgS HgS、ZnS、CuS、MnS
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