Unit 13 We’re trying to save the earth! 第一课时 Section A（1a ~ 2d）
I. 根据句意及图片或首字母和汉语提示填写单词。
1.（原创题）We are not supposed to use bags while shopping.
2. （原创题）Tom’s uncle is a （渔夫）. He goes fishing twice a week.
3.（原创题）There are many kinds of living things in the b of the sea. 4. The villagers used to burn c to get warm. 5. Don’t l waste things everywhere.
Ⅱ.用方框内所给单词或短语的适当形式填空。
advantage, wood, make a big difference, clean up, be full of 1.litter
（1）严重动词，意为“乱扔”，相当于throw。
（2）用作名词时，意为“垃圾；废弃物”，是不可数名词，相当于rubbish。 2. bottom
名词，意为“底部；最下部”，其反义词是top，意为“顶部；上面”。at the bottom of…意为“在……底部”。 3. ugly
形容词，意为“丑陋的；难看的”，其反义词是beautiful，意为“漂亮的；好看的”。 4. advantage
可数名词，意为“优点；有利条件”。 【拓展】
（1）advantage的反义词是disadvantage，意为“缺点；不足”。 （2）the advantage of意为“……的优点∕优势”。 5. cost（见原书P22, 4）
cost既可以用作动词，意为“花费”；又可以用作名词，意为“花费；价钱”。 【辨析】spend, take, cost, pay (1)spend “花费”，主语只是人，指某人“花费(时间、金钱)”，常用于spend…on sth.或spend…(in)doing sth.句型中。
(2)take “花费时间和金钱”，常用于It takes sb. much time/money to do sth.句型中。
(3)cost 作“花费(时间，精力，金钱等)”意思，主语只能是物或事情。cost 可以带双宾语，但cost没有被动语态。
(4)pay 作“花费”之意，主语只是人，指为s东西付钱，与介词for连用，句型为sb.pay money for sth.。
6. It’s our duty to play a part in our city.
7. We know that every advantage has its . 8. The mobile phone to our life.
9. The old man prefers chair to sofa.
10. The river smells terrible because it is litters. Ⅲ.单项选择。
( )11.（十堰）—Smart phones are more and more popular now. —So they are. But they still _________ too much. A. pay B. cost C. take D. spend ( )12. There's a Chinese takeaway in the centre of town. A.shop B.market C.take-out food D.building
( )13.A robot has lots of _______.It can help humans do hard and dangerous
work.
A.courage B.experiences C.advantages D.knowledge ( )14.—Let’s go hiking _______ staying at home,shall we?
—A good idea.
A.as well as B.in order to C.instead of D.even though ( )15.Many kids laugh at Kim’s looks and they think she is_______ . A.clever B.ugly C.nice D.kind Ⅳ.根据汉语意思完成英语句子，每空一词。
16.这间房子里将有一个聚会，请在聚会后把房间打扫干净。
There will be a party in this room. Please _______ it _______ after the party. 17.树对我们是有用的，当我们砍倒一些时，应该栽更多。
Trees are very useful to us.We should plant more when we_______ some _______.
18. 这件裙子我花了60美元。
The dress $ 60.
19. 我们的行动会使它变得不同，并通向更好的未来。
Our actions can and lead to a better future. 20. 这条河被严重污染了。
The river .
第一课时 Section A（1a ~ 2d）
Ⅰ. 1. plastic 2. fisherman 3. bottom 4. coal 5. litter
Ⅱ. 6. cleaning up 7. disadvantage 8. makes a big difference 9. wooden 10. is full of Ⅲ.11—15 DCCCC
Ⅳ.16.clean;up 17.cut;down 18. cost me 19.make a difference 20. was badly polluted