专题01Units1~3重点单词短语句型写作通用表达

Unit1Water

重点单词

litre(AmEliter)/li?t?(r)/n.升p.4

factory/f?ktri/n.工厂p.4

billion/b?lj?n/n.十亿p.5

salty/s??lti/adj.含盐的；咸的p.5

rest/rest/n.剩余部分；休息时间p.5

rare/re?(r)/adj.稀少的；珍贵的p.5

presentation/?prezn?te??n/n.展示会；介绍会p.6

useful/ju?sfl/adj.