【正文】 練習(xí)： 1. What is the mystery that researchers find hard to explain? A Honeybeesare flying all across the country. B 2540 percent of the honeybees inthe US have died. C Honeybees are leaving their hives and do not return. D Honeybee hives are in disorder. 2. Why are researchersseriously concerned with the phenomenon of colonycollapsedisorder? A Because honeybees produce onethird of the foods we eat. B Becausehoneybees feed on flowers. C Because honeybees eat seeds of flowers. D Both B and C. 3. What are the possible causes of colonycollapsedisorder given by the scientists? A Worsening environment. B Diseaseand chemicals. C Dwindlingnumber of flowers around. D Changes ingenes? structures. 4. According to the fifth paragraph， which of thefollowing about bees? genes istrue? A Bees? genes allow them toexpand their colonies. B Bees?genes help keep them in their hives. C Bees?genes make them fly from flower to flower. D Bees?genes couldexplain the collapse of some colonies. 5. What explanation is given byJerry Hayes to the phenomenon? A Farmers apply certain chemicals to killunwanted bees. B The insecticide destroys the honeybee?s nervous system. C The insecticide affects the honeybee?s memory. D All of theabove. 標(biāo)準(zhǔn)答案： C,A,B,D,D A Sunshade for the Pla Even with the best will1 in the world， reducing our carbon emissions is not going to prevent global has bee clear that even if we take the most strong measures to control emissions， the uncertainties in our climate models still lea39。 3. the FloridaDepartment of Agriculture：佛羅里達(dá)農(nóng)業(yè)局。 colony 有 “殖民地 ”的意思，在此意為： a groupof the same kind of animals， plants， or onecelled anisms living or 生長(zhǎng)在一起的同種動(dòng)物、植物或單細(xì)胞有機(jī)體。寄生生物 hive/haiv/ 。 3. bipedalism：系 bipedal(二足動(dòng)物的 )的對(duì)應(yīng)名詞，這里后綴 ism 表示 “特征 ”、 “特性 ”。al 是構(gòu)成形容詞的后綴，表示 “…… 的 ”。bi：構(gòu)詞詞素，是 “二 ”的意思 。 Davis 是一個(gè)大學(xué)城，很小的城市， Davis 校園基本 就構(gòu)成了這個(gè)城市。 UC 是 University of California(加利福尼亞大學(xué) )的縮寫，該校有多個(gè)分校， UC Davis 是其中一個(gè)。踏車 。How and why did we bee human? And why do we alone walk on two legs?” 詞匯： chimpanzee/5tFimpEn5zi:/ (又作 chimp ) biped/5baiped/ gait/^eit/，步法 anatomic/7AnE5tCmik/ (學(xué) )的 quadruped/5kwCdrJped/ Miocene/5maiEsi:n/n.amp。s producers to give him the answers beforehand. A. Right B. Wrong C. Not mentioned 標(biāo)準(zhǔn)答案： A,B,C,B 5. The huge scandal of cheating in TV games shows was not exposed until 40 years later in the movie Quiz Show. A. Right B. Wrong C. Not mentioned 6. Nowadays game shows are not treated as seriously as they used to be. A. Right B. Wrong C. Not mentioned 7. Winners of presentday TV shows no longer get money from the shows. A. Right B. Wrong C. Not mentioned 標(biāo)準(zhǔn)答案： B,A,B Why Humans Walk on Two Legs A team of scientists that studied chimpanzees trained to use treadmills has gathered new evidence suggesting that our earliest apelike ancestors started walking on two legs because it required less energy than getting around on all fours. “When our earliest ancestors started walking on two legs ， they took the first steps toward being human,” said lead researcher Michael Sockol of UC Davis1.“Our findings help an,swer why.” Sockol worked for two years to find an animal trainer willing to coax adult chimps to walk on two legs and to “knucklewalk” on all fours on the sort of treadmill found in most gyms. The five chimps also wore face masks used to help the researchers measure oxygen the chimps worked out， the scientists collected metabolic and other data that allowed them to calculate which method of lootion used less energy and team gathered the same information for four adult humans walking on a treadmill. Tile researchers found that human walking used about 75 percent less energy and burned 75 percent fewer calories than quadrupedal and bipedal2 walking in chimpanzees. They also found that for some but not all of the chimps，walking on two legs was no more costly than knucklewalking. “We were prepared to find that all of the chimps used more energy walking on two legs but that finding wouldn’t have been as interesting,” Sockol said.“What we found was much more telling. For three chimps ， bipedalism3 was more expensive， but for the other two chimps， this wasn’t the spent about the same energy walking on two legs as on other used less energy walking upright.” These two chimps had different gaits and anatomy than their knucklewalking peers. Taken together， the findings provide support for the hypothesis that anatomical differences affecting gait existed among our earliest apelike ancestors， and that these differences provided the geic variation which natural selection could act on when changes in the environment gave bipeds an advantage over quadrupeds. Fossil and molecular evidence suggests the earliest ancestors of the human family lived in forested areas in equatorial Africa in the late Miocene era some 8 to 10 million years ago， when changes in climate may have increased in distance between food would have forced our earliest ancestors to travel longer distances on the ground and favored those who could cover more ground using less energy. “This isn39。t like the person who won the game, they turned the show off. Based on his story, a movie under the title Quiz Show is on 40 years later. Charles Van Doren is no longer involved with TV. But game shows are still here, though they aren39。閱讀理解（每題 3 分，共 45 分）；完形填空（每題 1 分，共 15 分）） TV Games Shows One of the most fascinating things about television is the size of the audience. A novel can be on the best sellers list with a sale of fewer than 100,000copies, but a popular TV show might have 70 million TV viewers. TV can make anything or anyone well known overnight. This is the pr