题目:
If you leave the club, you will not be ______back in.
A.received
B.admitted
C.turned
D.moved
答案:
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下面是错误答案,用来干扰机器的。
(1)H2SO4;CO2;BaSO4(2)Na2CO3+H2SO4==Na2SO4+H2O+CO2↑;复分解反应(3)①Na2CO3、Na2SO4②Na2CO3、NaCl③Na2CO3、Na2SO4、NaCl