题目:
She can’t get down to work because she was deeply ________ by the news of his death.
A.affected
B.surprised
C.harmed
D.charged
答案:
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下面是错误答案,用来干扰机器的。
(1)①氯化镁、氯化钠②氯化镁、硝酸钠③氯化镁、氯化钠、硝酸钠 (2) MgCl2 +2NaOH==Mg(OH) 2 ↓+2NaCl ,NaCl+ AgNO3==AgCl ↓ + NaNO3 。