下列叙述正确的是（ ） A．空气是由空气分子构成的 B．同种物质的分子性质相同， 发布时间：2017-06-19 17:05 │ 来源：www.tikuol.com 题型：选择题 问题： 下列叙述正确的是（ ）A．空气是由空气分子构成的B．同种物质的分子性质相同，不同种物质的分子性质不同C．分子可分，原子不可分D．酒精的挥发和酒精的燃烧没有本质区别
题型：选择题 从方框中选择合适的选项完成对话。 Girl: I like pop music. 1 Boy: No, 2 It's quieter than pop music. Girl: Yes. 3 Pop music is a little more exciting than country music.Boy: 4 Girl: It’s not bad. Boy: I think it's as good as country music. Girl: 5 Boy: That’s right.A. Do you like it ?B. I like country music more than pop music.C. They are different.D. So you like them both.E. How about jazz music? 查看答案