比较下列各组物质的沸点①乙醇>丙烷②正丁烷>异丁烷③1-丁烯>1-庚烯，其中正确的是

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A：①②

B：①③

C：②③

D：①②③

上一题下一题 0.0难度选择题更新时间:2019-05-11 11:48:01

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A

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阅读下面材料，从所给的A、B、C、D四个选项中选出最佳的选项。

Do you know what an English first name means(意思)? Do you want a good name for your baby boy? Here is a list of British, American and Australian first names for boys and you can know what they mean. Then you can choose(选择)a meaningful name for your baby boy.

Name	Meaning(意思)	Name	Meaning
Albert	bright	Bond	farmer
Austin	helpful	Bryant	strong
Blaine	thin	Byron	bear
Curt	short or little	Dave	beloved
Douglas	dark	George	farmer

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