2019年春八年级英语下册Unit8SaveOurWorld课时滚动训练Lessons43_45练习新版冀教版.docx

Unit 8 Save Our World课时滚动训练Lessons 4345.完形填空Life today has brought new problems. One of _1_ problems is pollution. Water pollution _2_ our rivers and lakes dirty. It kills our fish and pollutes our _3_ water. Noise pollution makes us _4_ louder and become angry more easily. Air pollution is the most serious kind of pollution. Its bad for all _5_ things in the world.Cars, planes and factories all pollute our air every day. Sometimes the polluted air is _6_ it is like a quilt over a city. This kind of quilt is _7_ smog(烟雾)Many countries are making rules to fight pollution. Factories must now clean their water before it is thrown away, and they mustnt blow dirty smoke into the air. We need to do many other things. We can put waste things in the dustbin and not throw them on the ground. We can go to work by bike or with our friends in the same car. If there are _8_ people driving, there will be less pollution.Rules are not _9_. Every _10_ must help fight pollution. ()1.A. big Bthe biggerCthe biggest Dbiggest()2.A. has made BlikesClet Dhas taken()3.A. drink BdrinkingCdirty Dliving()4.A. to say BsayingCto talk Dtalk()5.A. alive Blife Cliving Dlively()6.A. too thick to Bthick enough toCsuch thick that Dso thick that()7.A. called Bcalling Ccall Dcalls()8.A. less Bfewer Ca few Da little()9.A. enough BrightCmuch Dimportant()10.A. people BpersonCmen Dstudents.阅读理解Pollution inside homes and other buildings kills more than 4 million people each year. Many people die as a result of breathing smoke or from cooking over woodpowered or coalpowered stoves.One way to reduce the number of deaths is through cooking equipment powered by the sun. Crosby Menzies, a solar power expert in a South African company, described his latest solar cooker called the “Sol4”“It is four square metres of mirrors, six to eight metres in length. It is quite a large cooker.”The “Sol4” works by reflecting(反射) light from the sun off large mirrors. The mirrors direct (把对准) the light at a cooking pan. Then the light heats the pan with solar energy. Within two minutes, the pan is hot enough to cook sausages and onions. In just four minutes, water can be boiled. That is as fast as cooking with natural gas or electricity.The cooker is also much “friendlier” than other models because people do not have to stand in the sun to use it. And people can prepare meals without having to collect firewood or spend money on coal. Such individuals would be less likely to have breathing illnesses from harmful smoke.At present, the cooker only works when the sun is shining. But engineers are working on a way to make it work without sunlight.Each cooker costs about $2，000, which is a large amount of money for most Africans. To solve that problem, Crosby Menzies has created a nongovernmental organization called Solar Cookers for Africa. It plans to raise money through donations to provide poor people with solar cooking equipment.()1.This passage is mainly about _. A. solar cooker Bsmoke pollutionCsolar power experts Dbreathing illnesses()2.The “Sol4” is mainly used to _. A. shorten the time of cookingBreduce the cost of making cookersCraise money through donations to help African peopleDreduce the number of deaths caused by harmful smoke()3.The underlined word “individuals” most probably means “_”. A. cookers BmirrorsCpeople Dexperts()4.Which of the following about the “Sol4” is TRUE?A. It is six to eight square metres