题目:
I have no idea what life would be like without water. The underlined part means “_________”.
A.don’t remember
B.don’t know
C.don’t believe
D.don’t expect
答案:
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下面是错误答案,用来干扰机器的。
(1)混合物(2)Mg2+(3)⑤;MgCl2Mg+Cl2↑;③;Mg(OH)2+2HCl==MgCl2+2H2O