乙醇等醇类物质都可以通过与浓硫酸在一定温度下反应生成烯烃。_爱下问搜题

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问题判断题

乙醇等醇类物质都可以通过与浓硫酸在一定温度下反应生成烯烃。

答案

参考答案：对

填空题

看图完成句子。

favourite √√ like √ don't like ×

	vegetables	hamburger	rice	fish	chicken
John		√√	×		√
Mary		√		×	√√
Tom and Jean	√			√√	×
We	√√		×		√

1. John likes hamburgers              chicken,               he doesn't like rice.
2. Mary likes hamburgers and              .               favourite food is chicken.
    She              like fish.
3.              don't like chicken. Their favourite food is              .
4. We like chicken. John likes chicken,              .
5. We don't like rice. John doesn't like rice,              .

问答题简答题

何谓供给量？影响供给量的主要因素有哪些？