初中英语九年级下册人教Unit13We'retryingtosavetheearth!Unit13SectionA(3a-3b)课后作业

1、 .根据句意及汉语提示完成单词。1I think its _(残酷的 ) of them to shoot the animals.2With the development of _(工业 )， it will cause more pollution problems.3The government has made some法(律 ) to protect the wild animals.4To solve this problem，we need to learn more _科(学的 ) knowledge.5Smoking is _(有害的 ) to your health. Y

2、ou must give it up. .单项选择。6 What have you learnt after three years study in China，Maria? I was taught _ knowledge _ good manners.A either；orBnot only； but alsoC neither； norDnot；but7 In our city ， the number of the teachers _ about，2 000，but only about_ of them are men teachers.A is；seven hundredsBa

3、re；seven hundredC is；seven hundredDare；seven hundreds8 Daniel is a boy of few words. But _，he is warmhearted.A in a hurryBin factC in the endDat all9So far， we _ English for nearly seven years.A learnBlearntChave learntD had learnt10 I havent seen my grandparents for long. Im too busy _ them theseda

4、ys. Why not call them instead?A visitBvisitingC visitsD to visit .根据句意及汉语提示，用恰当的短语填空。11This medicine has saved _(数百万 )peoples lives since it was putinto use.第 1页共 3页12_( 多 )people are working hard to achieve their dreams.13Helen _(不再 ) practices the piano because she is busy with herschoolwork.14I _

5、(听 )the new teacher in the last two days.15We should protect the animals _濒(危 ) .用方框内所 或短 的适当形式填空。law，hear of，cut off， top， no longer，in fact，each time，but also， such as， so farPerhaps many of us have (16)_ shark fin soup. But do you realize that(17)_ you enjoy a bowl of shark fin soup， youre killin

6、g a whole shark？When people catch sharks，they (18)_ their fins. This is not only cruel，(19)_ harmful to the environment. Because without a fin， a shark can(20)_ swim and slowly dies. Sharks are at the (21)_ of the foodchain in the oceans ecosystem. If their numbers drop too low， it will bring danger

7、 to all ocean life. But (22)_， around 70 million sharks are caught and tradedevery year. Environmental protection groups，(23)_ WildAid and the WWF ，are teaching the public about“ finning”(24)_， no scientific studies haveshown that shark fins are good for health. So governments must make (25)_to stop

8、 the sale of shark fins.答案：基 巩固 .1.cruel2.industry3laws4.scientific5harmful .6. B 点 ：句意： ，在中国学 三年之后， 你学到了什么？ 不但教 我知 ，而且教我 礼貌。 either or或者 或者；not only butalso 不 而且 ；neither nor既不 也不； not but不是 而是。故 B。7 C 点 ： the number of 意 “数目 ”，作主 用 数形式， hundred前有数字 用 数形式。故 C。第 2页共 3页8B9C点拨：so far 意为 “到目前为止 ”，常与现在完成时连用。故选C。10D .11.millions of 12A number of 13no longer 14have he