【正文】 p to the challenge and overe the crisis.2. Under threat of constant sand storms, we were pelled to leave our cherished village and move to the new settlement.3. According to a recent online survey, a lot of consumers say they may be motivated to consider buying products shown in TV mercials.4. Having spotted a truck driver dumping contaminated waste alongside the river, the old man reported to the police at once.5. Some scientists hold to the firm conviction that people will e to like genetically modified crops someday since they can increase yields and help bat hunger and disease in the developing world.Shortly after he achieved freedom Henson became intent on assisting fugitive slaves. He secretly returned to the United States from Canada several times to help others to travel the Underground Railroad to freedom. Once some slave catchers closed in on the escaping slaves and Henson when they were on the run. He disguised them and successfully avoided capture. Later he built a small settlement in Dresden in Canada for escaped slaves, setting up a chapel and a school. He held to the conviction that slavery would be abolished, and the day was bound to e when racial discrimination no longer existed.UNIT 3Vocabulary I. ) threatens 2) by a small margin 3)civilize 4)closed up 5)wandered 6) paste 7) without so much as 8) sideways 9) hook up to 10) universal 11) chart 12) Bathed in2. 1)narrowed down 2)looked back on 3)cut off 4)fit into 5)wear(the other) down 6)lies in 7)put up 8)stand for 3. 1)...which is likely to make people vulnerable to asthma has been found by researchers at the Department of Clinical Medicine in Oxford. 2)...with mirrored doors had to be built in so as to make their small bedroom look larger. 3)...feature the space shuttle Challenger blowing up in January 1986killing all seven crew. 4)...threatened to keep the pupils in after school, they were quieted at once. 5)... are a major barrier to the country39。s violent crimes. 5)His poor health is not unrelated to his unhealthy way of life. Comprehensive Exercises 1. Cloze1. 1) Statistics 2)rural 3)era 4)stood for 5)on the latch 6)vulnerable 7)barrier 8)electronic 9)reflection 10)civilized 2. 1) together 2)liable 3)shift 4)electric 5)cautious 6)sophisticated 7)thieves 8)break 9)chances 10)signsII. Translation ) The Internet is changing the way people live, (no matter) whether they are in urban or rural areas. 2)Mediumsized and small panies are more vulnerable to the threat of the global economic crisis than large ones. 3) With regard to our term paper, the professor asked us to analyze the unemployment chart first, and then provide critical reflections on the nations economic development. 4)It never occurred to him that their team would win the basketball match by a large margin.5) Looking back on my twenty years39。t leave the door on the latch if you happen to be the last to e in. If you decide to buy a sophisticated electronic alarm system, be sure to ask for its signs and put them up on both windows and doors. In addition you may have it hooked up to a police station.UNIT 4Vocabulary I. ) accordingly 2) loose 3) concentration 4)stimulating 5) fabric 6)if anything 7) reality 8) intuition 9) trifle 10) at the turn of the century 11) mess 12) undermine 2. 1) approve of 2) slow down 3) taken in 4) sucked into5) set apart 6) dozed off 7)call forth 8)stretch into9) keep up with 10)believe in3. 1)...provided inspiration for many artists and musicians over the decades. 2)...is credited to his powers of imagination 3)...on the foundations of an agricultural revolution 4)...not to make any plaints in the presence of the nurse. 5)...the outbreak of the Second World War. 4. 1) flaw/came to the conclusion/would get nowhere 2) in a row/dozed off/a mess of 3) outbreak of/ has undermined / has strained II. 1)With Christmas only a week away 2) With his physical condition improving day by day 3) With our GDP growing steadily 4) With all the shops closed 5) with her eyes closed 6) With the fog lifting during the nightIII. 1) like/as 2) as 3) like 4) like/as 5) as/like 6) as 7)like 8) asComprehensive Exercises 1. Cloze1. 1) caution 2) came to the conclusion that 3)never get anywhere 4)undermining 5) not give/care a fig 6) flaw 7) beyond any doubt 8)foundation 9)re