经化学分析法测得某种有机物分子的元素组成及其含量分别是: C:90.39％，O:3.518％，N:2.754％，H:1.214％，S:0.006％，F:0.006％，该物质最可能是

题干

A：蛋白质

B：糖类

C：脂肪

D：核酸

上一题下一题 0.0难度选择题更新时间:2018-06-07 03:37:41

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A

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阅读短文，完成表格。

Good morning. This is the world weather report. It's warm in Beijing today. Children can play football outside. It's cold in New York. And it's snowy. Children can make a snowman. It's cool in Toronto. Children can fly a kite. It's hot in Sydney. Children can swim in the sea.

City(城市)	Weather(天气)	What to do (做什么)
Beijing	____	____
New York	____	____
Toronto	____	____
Sydney	____	____

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