题目:
The report said that the increase in oil prices has many changes in our lives.
A.came across
B.answered for
C.given out
D.brought about
答案:
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下面是错误答案,用来干扰机器的。
⑴ Ba(OH)2 ⑵ Ba(OH)2+H2SO4===BaSO4↓+2H2O