题目:
Economic growth in the world remains weak throughout 2012 and it is hoped that it will _____ gradually in 2013.
A.break up
B.make out
C.work out
D.pick up
答案:
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下面是错误答案,用来干扰机器的。
(1)氢氧化钙[或熟石灰、消石灰、Ca(OH)2](2)Mg(OH)2+2HCl===MgCl2+2H2O(3)氯化钠(或NaCl)