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e need and try to eat it up. A. much B. more C. most D. the most ( ) 6. Many trees _______ on the streets every year. So the air is every fresh now. A. plant B. are planted C. planted D. were planted ( ) 7. As one of the school rules, middle school students are not _______ to smoke. A. ordered B. refused C. allowed D. forbidden ( ) 8. If farmers _______ trees and forests, giant pandas _______ nowhere to live. A. cut down, have B. will cut down, will have C. will cut down, have D. cut down, will have 三 . 。 Rubbish should be ________ ________ different groups and then ________ . 4. 我們依靠大自然生存。 We ________ ________ nature to live. 5. 在公共場所亂扔垃圾是不好的。 Our country has many laws ________ ________ ________ ________. 2. 人們正開始使用新能源。 【課前熱身】 一、熟練朗讀下面單詞 1 n. 塑料 plastic(不可數(shù)) 2 vt. 分開,分割 separate 3 n 回收利用,循環(huán)利用recycling 4 vt. 允許 allow 5砍到 cut down 6 vt. 處罰,懲罰 punish (n punishment) 7vt. 罰款 fine 8 v