最近，科学家研制是一种新的分子，它具有类似足球状结构，化学式为C60，下列说法正确的是

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最近，科学家研制是一种新的分子，它具有类似足球状结构，化学式为C₆₀，下列说法正确的是（　　）

A：C₆₀是一种新型化合物

B：C₆₀和金刚石都是碳的单质

C：C₆₀含离子键

D：C₆₀中含极性共价键

上一题下一题 0.0难度选择题更新时间:2017-10-26 11:24:21

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B

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短文改错。

Our school held an English speech contest each year. Han Meimei won the first prize in last year. Everyone was sure that she was going to the champion again this year. Yet, to our surprise, she, instead getting the first prize, coming out second in the end. When the judge at the contest announced the results, Han Meimei felt so sadly that she almost cried. Therefore, she was not discouraged. When the second prize was given to her, she said to her, “The prize is not of important. I am going to work still hard to improve my English speaking ability.

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