According to the characteristics of element abiochemistry, the author concludes some methods of teaching on it. 针对元素无机化学教学内容的特点, 介绍了在组织元素无机化学的教学过程中的几点做法和体会.
According to the characteristics of element abiochemistry, the author concludes some methods of teaching on it.针对元素无机化学教学内容的特点, 介绍了在组织元素无机化学的教学过程中的几点做法和体会....
A nationwide campaign against pornography began in the summer.一场全国性打击淫秽作品的行动在夏季打响了。Police have seized several consignments of pornography.警方没收了好几批运来的色情物品。...the notion that pornography degrades women...认为色情作品有辱女性尊严的观念Do ...