Unit13 We’re trying to save the earth Period 3同步练习

21世纪教育网 –中小学教育资源及组卷应用平台 Unit13 We're trying to save the earth! Section A Period3同步练习 1、用括号中所给单词的适当形式填空。 1. There are many _____ (danger) animals in the world today because of humans' improper behavior.21教育网 2.We all know that Taiwan is in the _____(south) part of China. 3. _____ (science) farming is important.Now more and more farmers are interested in it. 4.China is facing more and more _____(environment) problems. 5.Fruit juice can be _____ (harm)to children's teeth. 2、单选。 1.I don't know the writer，but I have _____ him.21*cnjy*com A．laughed at B．waited for C．heard of D．agreed with 2.Drinking alcohol(白酒)can be _____ your brains. So people in China aren't allowed to drink it if they are younger than 18.2-1-c-n-j-y A．good at　 B．good with　 C．harmful to　 D．thirsty for 3.Because of the water pollution，they had to _____ the city's water supply for several days.21cnjy.com A．cut up B．cut out C．cut off D．cut in 4. —What film do you like best —The Martian. It _____shows a lot of imagination, _____has a sense of humor. A．too; to B．neither; nor C．either; or D．not only; but also 5.—What _____ the number of the students in your school？21·cn·jy·com —About two thousand.A number of them _____ from the countryside. A．is；are B．is；is C．are；is D．are；are 三、完成句子。 1．很多野生动物处于极度危险中。 Many wild animals are _____ _____ _____.21世纪教育网版权所有 2．交通废气对环境有害。 Traffic fumes _____ _____ _____ the environment. 3．对政府来说，教育是位于议程最顶端的事情。 For the government, education is now _____ _____ _____ _____ the agenda.【来源：21·世纪·教育·网】 4．如果它们的数量降到太低,它将会给全部海洋生命带来危险。 If their numbers_____ _____ _____,it_____ _____danger to all ocean life. 【来源：21cnj*y.co*m】 5．我觉得对我来说是采取行动的时间了。 I felt that it was time for me _____ _____ _____．【出处：21教育名师】 四、阅读。 Some visitors to new places take pictures of animals, but other visitors hunt (打猎) and kill them. They do not kill animals for food, but because they like hunting. In many countries people can make a lot of money from animals.21*cnjy*com Elephants die because people want ivory. Rhinoceros (犀牛) die because people want to buy their horns. Pollution (污染) of our land, sea, rivers and sky is getting worse and worse. We are making our world a much dirtier place, so many animals cannot live in it. Pollution is bad for all of us. It’s killing animals. Sooner or later it is going to kill people too.We put new buildings on empty land and don’t think about animals. We make new roads, move rivers and cut down trees. So we are taking the natural homes of animals very fast. Where can they go In the end, the answer is often nowhere and the animals die. Animals are in danger from natural accidents. Some animals die because the weather changes and some animals are also in danger from our behaviour (行为). We can not protect animals or people from accide ... ...