Unit 13 We're trying to save the earth!单元质检卷（B卷） 一、单选题（共10小题；每小题5分，满分50分） 1.Please be quiet. The students _____ a listening test. A. having B. are having C. had D. have 2.—Are they visiting the Great Wall right now —No, they _____. A. don’t B. isn’t C. aren’t D. doesn’t 3.Shopping used to _____ going to shops, but nowadays, you can do it online at home. A.means B.meant C.mean D.meaning 4.—Can you tell me how to use this new phone to take photos —_____. Let me have a look. A. No way B. No problem C. I’m afraid not. D. It doesn’t matter. 5.—What are Mr. and Mrs. Black doing —They _____ tea in the garden. A. are drinking B. drank C. have drunk D. drink 6.—Excuse me, can I have a word with Doctor Smith —I’m sorry, Doctor Smith _____ on a patient at the moment. A. is operating B. operated C. has operated D. will operate 7.My mother _____ in this school for ten years and she is always patient with her students. A. taught B. will teach C. has taught D. is teaching 8.Look! The kids _____ a snowman—Bing Dwen Dwen. it is so cute. A. are making B. make C. makes D. will make 9.Tom usually _____ the table before but now his sister _____ the table. A. sets; is setting B. is setting; sets C. sets; sets D. is setting; is setting 10.—Where is your mom, Candy —She_____ flowers in the garden. A. watered B. waters C. will water D. is watering 二、阅读理解（共5小题；每小题5分，满分25分） The Garbage (垃圾) Project started at the University of Arizona in 1973. Since then, the students and teachers in it have studied the modern garbage in different cities. To study the garbage, the students had to travel to landfills (填埋场) , the places where cities bury (填埋) their garbage. While the students were studying the garbage, they wore special clothes. Students were very careful when they opened bags of garbage. One important thing the students have learned from studying the garbage is that the garbage in landfills disappears very slowly. That was surprising to both the students and many scientists who had thought that about 70%of the garbage in landfills would disappear quickly. Even in cities where it rains a lot, the students found newspapers from 1948, 40-year-old hot dogs, and vegetables from 1970.And the students also found many more empty bottles of cola than they had expected. How to dispose of our garbage well depends on what kind of garbage it is: regular (普通的) garbage, dangerous materials, or recyclable materials, such as newspapers and glass bottles. Regular garbage goes to regular landfills. Dangerous materials are harmful to people's health and the environment. They shouldn't go into regular landfills. Homes are full of dangerous waste. One kind of the dangerous waste in homes is batteries. When batteries are buried directly (直接地) in a landfill, they often break open. The poison inside them moves through rain water to the bottom of the landfill. Then it can pollute the natural water in the ground. Another da ... ...
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