1、4.3 课时作业.根据汉语提示写出单词1Nowadays people use too many _ (化学药品) in their life, which is bad for the living conditions.答案：chemicals2Theyve made an _ (紧急的) request for international aid.答案：urgent3We should pay more attention to the pollution of the _ (大气)答案：atmosphere4Many people are worried about the pollu
2、tion of _(环境)答案：environment5He _ (抱怨) to the waiter that his meat was cold.答案：complained6At the same time we are taking measures to _(保护) wild resources.答案：protect7It was _ (绝对地) impossible for him to go abroad yesterday.答案：absolutely8The _ (污染的) water is not fit to drink.答案：polluted9A scientist mus
3、t produce some _ (证据) in support of a theory.答案：evidence10Her parents are very _ (担忧) about her behavior.答案：concerned.选用方框里的短语的适当形式填空take ingive outin a nutshelllook throughtake awaycomplain aboutbe concerned abouthave an effect onhave difficulty inif possible1Though working outside, he _ always _ h
4、is aging mother at home.答案：is; concerned about2Some students find it hard to _ the new teachers dialect(方言)答案：take in3Plants take in carbon dioxide and at the same time _ oxygen.答案：give out4Before you answer these questions, youd better _ them first.答案：look through5Lazy people usually do nothing but
5、 _having so many problems.答案：complain about6The doctor thought the medicine was perfect, but it didnt _ the disease at all.答案：have an effect on7_， Im going to visit some homes for the old in the city.答案：If possible8They _ his crutches (拐杖) and forced him to crawl on the ground.答案：took away9Tommys re
6、ally naughty, so we _keeping him quiet when we took him to a concert.答案：had difficulty in10Its a long story, but to put it _， he has been arrested.答案：in a nutshell.阅读理解AA sandstorm refers to a high amount of wind occurring in sandy areas, usually in deserts, where the wind speed is able to lift the
7、top layer (层) of sand from the ground, and push it in every direction. The sand involved in the sandstorm can reach heights of about 3.05 m15.24 m.It is very dangerous to experience a sandstorm. Sand can get into the nose, eyes, mouth and lungs. If you happen to be caught in a sandstorm, you must pr
8、otect yourself by wearing masks, scarves (围巾) and so on.If youre driving when such a storm approaches, its advised that you pull off the road, since its difficult to continue driving. This is also important since vehicles can fail in during sandstorms and you could end up stuck on the road. Most san
9、dstorms occur in spring, and during the daytime. Many of the areas around the Persian Gulf and the Sahara Desert are associated with the most serious storms. Since its a natural phenomenon (现象), it cant be entirely controlled. In areas that are natural desert regions, you cant always prevent a sands
10、torm. Theres much evidence that the planet Mars has dust storms, and clearly, no human intervention (介入) is responsible for such. Though_it_can_move_whole_sand_dunes_and_destroy_crops,_a_sandstorm_is_not_without_benefit_(益处). 1If youre driving in a sandstorm, youd better _.A. stop your car in the mi
11、ddle of the roadB. continue to make your wayC. stop and ask for helpD. stop your car on the side of the road答案与解析：D细节理解题。根据第三段的If youre driving when such a storm approaches, its advised that you pull off the road可知，如果你遇到沙尘暴，你最好把车停在路边。pull off the road把车停在路边。故选D。2The underlined sentence shows that, a
12、nyway, sandstorms are _.Auseful BuselessCharmful Dpowerful答案与解析：A推理判断题。此句表明虽然沙尘暴能够移动沙丘并毁坏农作物，但它并不是毫无益处的。注意a sandstorm is not without benefit表示“不无裨益”，是双重否定表示肯定。benefit益处。故选A。3According to the writer, a sandstorm _.A. is the result of human activitiesB. can be preventedC. cant completely disappear on
13、the earthD. cant be forecast答案与解析：C推理判断题。根据最后一段可知，作者认为沙尘暴是一种自然现象，不能完全被控制，也就不会完全消失，并且它也不是人为的后果。由此可知选C。4What will be talked about if there is a fifth paragraph?A. the cause of sandstormsB. how to prevent sandstorms C. the benefit of sandstormsD. the forecast of sandstorms答案与解析：C推理判断题。从最后一段最后一句可以判断，下一段
14、作者要谈论沙尘暴所带来的益处。BApple has entered the textbook market. The tech giant (科技巨头) introduced iBook textbooks a couple of weeks ago when it announced its iBooks 2 platform. They are digital books (数字化书籍) in a variety of subjects taking in science, math, history and geography.Apple developed its iPadbased
15、textbooks in conjunction with (和一起) major textbook publishers. The company offers a collection of textbooks for high school student.Apple says it offers a “new textbook experience” and suggests its iBook textbooks are “the next chapter in learning.”It sounds like good news for pupils and students. T
16、hink of it. No more carrying heavy backpacks (背包) full of textbooks. Every textbook you require can be stored on your iPad. No more having to buy expensive textbooks which you will only use for a year or two and then sell or give away.Of course theres a_catch. You need to own an iPad and as you know
17、, it is not cheap. You also need to buy digital textbooks, mostly priced each at $14.99 (94.74 yuan) or less.Textbook publishing was worth $ 8. 7 billion in the US alone last year. Will digital books take over completely in education? That remains to be seen.5What is the best title of the text?A. Ap
18、ple Enters New MarketB. A Different Way of LearningC. Experience Digital TextbooksD. Say Goodbye to Tradition答案与解析：A主旨大意题。文章的开头就指出，苹果产品进入教科书市场。故选A项。6iBook textbooks will do good to pupils and students because _.A. they are free to getB. they are easy to carryC. they are iPadbasedD. they are favorite
19、 gifts答案与解析：B细节理解题。根据第三段中的No more carrying heavy backpacks full of textbooks.可知iBook教科书使得学生再也不用背沉重的书包了，故选B项。7The underlined words “a catch” in Paragraph 4 are closest in meaning to _.A. an advantage B. a surpriseC. a problem D. an order答案与解析：C词义猜测题。根据本段的内容可知你不得不买iPad，另外还要买电子书，而且价格不菲等一些不利之处可知选C项。8Wha
20、t can we know from the last two paragraphs?A. iPadbased textbooks have changed our learning.B. Traditional textbooks will be replaced sooner or later.C. Apple has earned a lot from the textbook market.D. Digital books have disadvantages and advantages.答案与解析：D推理判断题。倒数第二段说明了使用iPadbased textbooks的好处；而最
21、后一段的主题句为第一句话，说明使用iPadbased textbooks的一些问题，故可推知答案为D项。.语法填空Son: Mom, my teacher wants us to tell the class about where our parents work. I will tell them that my dad is a cook _1_ (work) in a nice restaurant. _2_ I dont know what I will tell them about you because Im not sure _3_ you work.Mother：I wor
22、k from home.Son：I _4_ (think) a real job meant you went somewhere _5_ to work rather than at home. What kind of work do you do from home?Mother：Not all work _6_ (do) like your dads job. I am a medical transcriptionist (根据录音打字的打字员). It means that I listen to doctors talking about a medical report and
23、 then I write it down for _7_. The doctors are very busy _8_ patients and dont have time to write everything down. So the doctors have something to look at next time they see _9_ patients, I receive the tapes of the doctor and then I write them down on our computer. I get a paycheck for my work ever
24、y two weeks.Son: Why do you want to work at home?Mother: _10_ is better for me to work according to my own plan. The freedom of making my own hours gives me more time to take care of my family.Son: Now I understand and can explain it to my class.答案：1.working2.But3.where4.thought5.else6.is done7.them
25、8.with9.their10.It.短文改错One day last week I went a walk in the country. In the morning the weather was well and the sun was shining; the sky was blue and it were no clouds. Soon a cool wind started blown and black clouds were covered the sun and then it started to rain. There was no houses in sight,
26、so I got very wet. After a hour or so, I managed to catch a bus it took me home. But when I arrived I was shivering and I knew I had caught a bad cold. I shall have taken my raincoat. I had nothing to do but stay at home and waited for a doctor.答案：One day last week I went a walk in the country. In t
27、he morning the weather was and the sun was shining; the sky was blue and were no clouds. Soon a cool wind started and black clouds covered the sun and then it started to rain. There no houses in sight, so I got very wet. After hour or so, I managed to catch a bus took me home. But when I arrived I was shivering and I knew I had caught a bad cold. I have taken my raincoat. I had nothing to do but stay at home and for a doctor.
