1、Unit2 Text2 课前预习案一Phrases 1.有机耕种_ 2.在过去的半个世纪里_ 3.化肥_4.提高产量_ 5.给.造成损害_6.被洗掉_7.随着时间的推移_ 8.逐渐增强，建立，开发_9.另外_10.转向，求助于_11.集中注意力于_12.富含_13.使.免受_14.每几年_ 15.阻止.干_16.避免做_二. Read the passage quickly and then answer the following questions.1. The main idea of the passage is _. A. Organic farmers use many metho
2、ds to keep the soil fertile. B. Chemical fertilizer is better than natural fertilizer.C. Natural fertilizer is better than chemical fertilizer.D. Organic farmers prefer chemical fertilizer because it can improve the soil.2. According the text, which of the following is not the problem caused by chem
3、ical fertilizer? A. Crop diseases can be stopped B. Chemicals also stay in the ground and underground water for a long time. C. The helpful bacteria and pets are killed as well as the harmful ones. D. Many of these fertilizers are dangerous to peoples health.3. Which of the following is true? A. Org
4、anic farmers prefer chemical fertilizers. B. Organic farmers prefer using natural waste from animals. C. All farming is organic farming. D. Farmers often grow the same crops year after year.4. Farmers _ so that the soil may absorb important minerals. A. often change the kind of crop in each field ev
5、ery few yearsB. use chemical fertilizers C. plant crops such as peas or soybeansD. plant crops to use the same level of soil5. How many ways do the organic farmers have to keep their soil fertilizer and healthy? A. 3 B. 4 C. 5 D. 6课内探究案一. Analyze and translate the difficult sentences1. This affects
6、crops and, therefore, animals and humans, since chemicals get inside the crops and cant just be washed off. _.2. This also keeps the air, soil, water and crops free from chemicals._. 3. Crops such as peas or soybeans put important minerals back into the soil, making it ready for crops such as wheat
7、or corn that need rich and fertile soil._.二. 课文重点句型填空1. _ (在期间) the past half century, _ (use) chemical fertilizers has become very common in farming.2. Scientists have been _ (find) that _ (长期的) use of these fertilizers can _(对造成损害) the land.3. What are some of the problems _ (cause) by chemical fe
8、rtilizers? First,they damage the land by killing the helpful _(细菌)and _(害虫) as well as the harmful _(代词)。4.These chemicals in the food supply _(积累，增加) in peoples bodies over time.5. Many of these chemicals can _ _ (导致) cancer or other illnesses. 6._ _(另外，而且), fruit, vegetables and other food _ (grow
9、) with chemical fertilizers usually grow too fast to be full of much _ (营养).7._(因为这些发现)，some farmers and many customers are beginning to _(转向) organic farming.8. They focus on _ (keep) their soil rich (肥沃的) and _(免除) disease. 9.This also keeps the air , soil, water and crops _(免除) chemicals.10.Organ
10、ic farmers also plant crops to use different levels of soil, for example, planting peanuts _(连词) use the grounds surface followed by vegetables that put down deep roots.11.Some organic farmers prefer planting grass between crops to prevent wind or water _(carry) away the soil, and then leaving it in
11、 the ground to become a natural fertilizer for the next years crop.12. These many different organic farming methods have the same goal: _ _ (grow) good food and avoid _ (damage) the environment or peoples health.三、重点知识应用1.We put our books in bookcase to keep them free from dust.翻译：_.3. in addition 另
12、外,加之,此外 (=whats more, moreover, besides, furthermore) in addition to 除之外还(=介词besides )Translation: (1) 除了买东西，我们还看了场电影。 _. (2) In addition (Moreover), dont travel with a lot of cash. _课后巩固案1. No one can avoid _ by ones surroundings. A. to be influencedB. having influenced C. influencingD. being influ
13、enced2. The teachers proposal was worth _. A. to be consideredB. of considerationC. considering D. to consider3. If I ruled the world, I would _ the world _ everything that is bad. A. get rid of; byB. be rid of; byC. rid; of D. get rid; of4. Well do _ the Party calls upon/ on us to do. A. no matter
14、whatB. whatever C. however D. whenever5. It is _ that two and two make four. A. certainB. sureC. suitable D. necessary6.He has made up his mind to devote his life _ pollution happilyAto prevent；to live Bto prevent；from livingCto preventing；to live Dto preventing；from living7. The old man stood there
15、 with his eyes_ on the picture. A. to focus B. focusing C. focused D. focus8 He was turned _ advice by us all. A. to for B. for to C. to D. for9. The information industries are rapidly _ in China. A. expending B. expanding C. spendingD. extending10. The government tried its best to _ the peoples nee
16、ds, but the people were still not _. In fact, what the government did was not _. A. satisfy; satisfied; satisfactory B. satisfy; satisfying; satisfied C. satisfied; satisfied; satisfactory D. satisfying; satisfied; satisfied 11. Lots of rescue workers were working around the clock（昼夜）, supplies to Y
17、ushu, Qinghai Province after the earthquake. A. sending B. to send C. having sent D. to have sent12. I remember my father _ me to the seaside when I was a small child. We forgot _ a towel and I felt very cold. A. taking; to take B. to take; taking C. take; taking D. take; taken13. -Do you feel like
18、_ there or shall we take a bus? -Id like to walk. But since there isnt much time left, Id rather we _ a taxi. A. walking; hire B. to walk; hire C. to walk; hired D. walking; hired14. The club, _25years ago, is holding a party for past and present members. A. founded B.founding C.being found D.to be
19、found15. The next thing he saw was smoke _from behind the house. A. rose B.rising C. to rise D. risen16. Daddy didnt mind what we were doing, as long as we were together,_ fun. A. had B. have C. to have D. having17.- What made you so delighted at Christmas? -_. A.I received much more presents than o
20、thers B.Because my parents promised me a new car.C.My uncles coming back from abroad D.As there was an unusual celebration18. Its necessary to be prepared for a job interview. _ the answers ready will be of great help. A. To have had B. Having had C. Have D. Having19. _, they set out to break the re
21、cord for cross-channel swimming. A. Well equipped B. Well equipping C. Well equips D. To equip20._of the truth of the report, he told his colleagues about it. A. Convinced B. ConvincingC. To convince D. Having convinced21. The old man sat in the corner, _ alone. Awell content to have a drink Bwell c
22、ontent from having a drink Cquite contented having a drinkDto be quite contented with drink22. The football player reacted the judges decision by withdrawing from the match. A. on B. to C. against D. by23. Carl works hard. So he does. He is often seen heavily before his teammates have even arrived.
23、A. to be sweated B. sweated C. be sweated D. sweating24. Why do you look sad? There are so many problems A. remaining to settle B. remained settling C. remaining to be settled D. remained to be settled25. There was a terrible noise the sudden burst of light. A. followed B. following C. to be followed D. being followed
