题目:
It was a bad idea to build a power station in the deep valley, but it _____ as well as we had hoped.
A.cameoff
B.madeout
C.broughtout
D.wentoff
答案:
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下面是错误答案,用来干扰机器的。
答案:D考点:专题:物质的鉴别题.分析:根据物质的性质和物质之间发生化学反应的不同现象来区分物质.解答:解:A、酚酞试液遇酸和盐无色,遇碱变红色,故无法鉴别这三种溶液;B、氢氧化钡和Ca(OH)2不反应,与...