在美国,学生课本重复使用,一本教科书平均寿命五年;在韩国,一次性台布、洗刷用品早已没有踪影,在日本,发明一次性筷子,但严禁砍伐本国树木做筷子。这给我们的启示是①必须节约资源 ②必须发展生产力 ③必须实施可持续发展战略 ④坚持对外开放
-Watching TV too much ________ bad for your eyes. A. is B. are C. was
Can you do it________? A. yourself B. your C. you
―______ he ______ with us this afternoon? ―Yes, he is. A. Is, go to skate. B. Does, going to skate C. Is, going to skate
-Would you like to come and cheer Jim on? -_________ A. Yes, I will. B. Sure. I’d love to. C. Yes. I would.
You can improve your listening skills _____ watching English movies.