题目

二次大战后发展中国家城市化进程加快的原因是： ①城市经济畸形发展；②人口增长过快，导致农村劳动力过剩；③农业劳动生产率提高；④城市基础设施完善；⑤城市就业条件改善。 A．①④  B．②③   C．④⑤  D．①② 答案：D  It,s very important that we all recycle (再利用) .In nature,everything 1 again. For example,when an animal dies,it becomes 2  animal’s food. Nothing is wasted.But humans have created things like plastic bags 3 can’t be broken down by nature. Our rubbish kills animals and 4  water and soil. 5  we continue making too much rubbish,the problem will only get worse. If nature can^ reuse the rubbish,we must recycle 6 We should clean up the rubbish we’ve made because nature can’t.Recycling is also the right thing to do for another reason. The earth is rich in natural materials like water and trees, 7 these materials are not endless. We use up our natural materials much 8 than the earth is able to reproduce them. For example,each year we cut 9  more than 6 ,000 square miles of forest. But it takes an average of 25 years for a new tree 10 Recycling can help us save the earth,so let’s take action right now.1 .A. use   B. using   C. is used   D. used2. A. another   B. the others   C. others   D. the other3. A. who   B. which   C. how   D. where4. A. pollutes   B. polluted   C. polluting   D. is polluted5. A. When   B. Whether   C. Why   D. If6. A. them   B. their   C. it   D. itself7. A. but   B. so   C. and   D. or8. A. fastly   B. fast   C. faster   D. fastest9. A. out   B. down   C. in   D. up10. A. grows   B. for growing   C. growing   D. to grow