1、公共英语三级分类模拟题 76及答案解析(总分：70.00，做题时间：90 分钟)一、Section Reading Co(总题数：0，分数：0.00)二、Part A(总题数：0，分数：0.00)三、Text 1(总题数：1，分数：5.00)Flying over a desert area in an airplane, two scientists looked down with trained eyes at trees and bushes. After an hour“s flight, one of the scientists wrote in his book, “Look
2、here for probable metal.“ Scientists in another airplane, flying over a mountain area, sent a message to other scientists on the ground, “Gold possible.“ Walking across hilly ground, four scientists reported, “This ground should be searched for metal.“ From an airplane over a hilly wasteland a scien
3、tist sent back by radio one word: “Uranium.“ None of the scientists had X-ray eyes: they had no magic power of looking down below the earth“s surface. They were merely putting to use one of the newest methods of locating minerals in the groundtrees and plants as signs that certain minerals may lie b
4、eneath the ground on which the trees and plants are growing. This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of bushes and trees that grow in the surface. At Watson Bar Greek, a brook (小溪) six thousand feet high in the mountains o
5、f British Columbia, Canada, a mineral search group gathered bags of tree seeds. Boxes were filled with small branches from the trees. Roots were dug and put into boxes. Each bag and box was carefully marked. In a scientific laboratory, the parts of the forest trees were burned to ashes and tested. E
6、ach small part was examined to learn whether there were minerals in it. Study of the roots, branches, and seeds showed no silver. But there were small amounts of gold in the roots and a little less gold in the branches and seeds. The seeds growing nearest to the tree trunks had more gold than those
7、growing on the ends of the branches.（分数：5.00）(1).Scientists were flying over a desert or a hilly wasteland or a mountain area in order to search for _ in the ground.（分数：1.00）A.goldB.silverC.uraniumD.minerals(2).The study of trees, branches and roots shows that _.（分数：1.00）A.there were larger amounts
8、of gold in the branches than in the seedsB.there were smaller amounts of gold in the roots than in the branchesC.there were less amounts of gold in the seeds growing on the ends of branches than seeds growing nearest to the tree trunksD.there was more gold in the branches than in the roots(3).Which
9、of the following is the best title?（分数：1.00）A.Scientists Searching for Metals with Special PowerB.New Methods of Searching for MineralsC.Gold Could Be Found by Trees and PlantsD.A New Method of Searching for MineralsUsing Trees and Plants(4).Which of the following is NOT mentioned as part of a tree
10、that can help find minerals?（分数：1.00）A.Leaves.B.Roots.C.Branches.D.Seeds.(5).The scientists were searching for minerals by using _.（分数：1.00）A.X-rayB.magic powerC.a special instrumentD.trained eyes四、Text 2(总题数：1，分数：10.00)We have heard a lot about the health benefits of tea, especially green tea. It i
11、s high in polyphenols, compounds with strong antioxidant activity that in test-tube and animal models show anticancer and heart-protective effects. Good clinical studies are few, however, and although physicians tell their patients to drink green tea, there hasn“t been any definite proof of the valu
12、e of that advice. A team of Japanese researchers was able to link green tea consumption with decreased mortality from many causes-including heart disease. The researchers tracked 40,530 healthy adults ages 40 to 79 in a region of northeastern Japan where most people drink green tea, following them f
13、or up to 11 years. Those who drank five or more cups of green tea a day had significantly lower mortality rates than those who drank less than one cup a day. There were also fewer deaths from cardiovascular disease. But no such association was seen with deaths from cancer. Nor was consumption of ool
14、ong or black tea connected with any decrease in mortality. Those teas are easier to be combined with oxygen in processing, which not only darkens the color of the leaves and changes their flavor but also reduces their polyphenol content. Coffee is more complicated. It has received both gold stars an
15、d black marks in medical literature. It, too, contains antioxidants, although they are less well studied than tea polyphenols. Evidence for the health benefits of coffee is growing, however. A group of investigators from Finland, Italy and the Netherlands reports that coffee seems to protect against
16、 age-related decline in mental capacity. The scientists studied 676 healthy men born from 1900 to 1920 and followed them for 10 years, using standardized measures of brain function. Their conclusion: the men who consumed coffee had significantly less decline in mental capacity than those who didn“t.
17、 Three cups a day seemed to provide the most protection. Population studies like those help us form assumptions about relationships between dietary habits and long-term health. We still have to test our suppositions in controlled conditions, and measure the effects of coffee and tea on various syste
18、ms of the body.（分数：10.00）(1).Physicians often tell their patients to drink green tea because _.（分数：2.00）A.its medical value has been provedB.it is believed to be good for one“s healthC.it has long since been used clinicallyD.its effectiveness has been shown in animals(2).The Japanese study seems to
19、have confirmed the positive effect of green tea on _.（分数：2.00）A.young adultsB.Asian peopleC.patients with cancerD.patients with heart disease(3).The text indicates that black tea differs from green tea in that _.（分数：2.00）A.it can retain the color of its leavesB.it can reduce cancer-related deathsC.i
20、t contains less polyphenol contentD.it is stronger in flavor than the latter(4).Coffee is beneficial to one“s health because _.（分数：2.00）A.it has more antioxidants than green teaB.it slows down the rate of brain agingC.it lowers the rate of natural mortalityD.it keeps systems of the body active(5).Th
21、e text indicates that the relationships between dietary habits and long-term health _.（分数：2.00）A.are a falsely perceived suppositionB.are a conflicting issue among peopleC.deserve further scientific researchD.deserve to be tested on a larger population五、Part B(总题数：1，分数：10.00)Jennifer: The greenhouse
22、 effect might be causing the change, but it“s a cycle that“s been tracked for about a hundred years and in the past 20 years or so it just stopped cycling. And this is only affecting a small part of the world. People talk about greenhouse effect because they want to show how much concern they have a
23、bout the future of the world. Don“t be as silly as them. Kac: Spring just hits here, too. It“s so nicewindows open, the fresh air of changing seasons just lights me up. When I was younger this was the season for walking through the melting snow and ice, across roadsides, through square acre forests
24、among the fields, I got so excited to be out in the wild. It“s tough to be in the city this time of year. Maybe I“ll go camping soon! Soscia: In the city you don“t have seasons. Spring rain does not make man-made structure grow, and wet roads are not inconvenient for you because you can move around
25、in your car. Summer“s heat is no longer a problem and air-conditioning makes your rooms cool as autumn. The colors of the city don“t change because nature is not powerful enough to change them as she changes the color of woods. Winter snow leaves nothing white but muddy roads. Harno: Snow in Georgia
26、 is a funny thing. We have been having 24 hours weather news on the TV for the past week, just because there is a threat of snow. Schools have closed based on these predictions, and all we got was rain. But the rule is that if it sticks to the ground, school is canceled. It would be a great excuse t
27、o get the day off. People rush to the grocery store to buy milk and breadI don“t know why, but they do. When I was growing up here we used to get one or two big snowfalls a year, but there has not been any for the last few. Damn global warming. Macland: It“s been so nice. I am of the firm belief tha
28、t in February we get the day like cool autumn season in November. In February it“s like a warm period that“s been getting stronger and longer every year since my boyhood, and it gets defeated by the final blowing snowstorm of March at least once, but anyone can survive (生存) those snowstorms, since w
29、e all know they“ll be gone in a few days. StatementsA. Future is bright. B. Man conquers nature. C. We can see the effect of the pollution on the climate. D. Human beings have to struggle hard against weather. E. The call of nature is there. F. He hates spring. G. Sometimes we worry too much about n
30、othing.（分数：10.00）(1).Jennifer（分数：2.00）(2).Kac（分数：2.00）(3).Soscia（分数：2.00）(4).Harno（分数：2.00）(5).Macland（分数：2.00）六、Section Writing(总题数：0，分数：0.00)七、Part A(总题数：1，分数：15.00)1.Suppose you are a leader of the student union, you are to write a letter to make an appointment with the school president talking a
31、bout some concerns from the students about such things as living conditions, school activities and learning. Be sure to include the following points given below: 1) Introduce yourself, the need to make an appointment; 2) The contents for the discussion: living conditions, school activities and learn
32、ing; 3) Other points. You should write an essay for approximately 100 words. Do not sign your own name at the end of your letter. Use “Li Bing“ instead. You do not need to write the address. （分数：15.00）_八、Part B(总题数：1，分数：30.00)2.Changes in the Ways People Spend Their Holidays 1990 2001 Traveling abro
33、ad 12% 24% Going to seaside 38% 31% Camping 10% 36% Staying at home 40% 9% Total 100% 100% （分数：30.00）_公共英语三级分类模拟题 76答案解析(总分：70.00，做题时间：90 分钟)一、Section Reading Co(总题数：0，分数：0.00)二、Part A(总题数：0，分数：0.00)三、Text 1(总题数：1，分数：5.00)Flying over a desert area in an airplane, two scientists looked down with trai
34、ned eyes at trees and bushes. After an hour“s flight, one of the scientists wrote in his book, “Look here for probable metal.“ Scientists in another airplane, flying over a mountain area, sent a message to other scientists on the ground, “Gold possible.“ Walking across hilly ground, four scientists
35、reported, “This ground should be searched for metal.“ From an airplane over a hilly wasteland a scientist sent back by radio one word: “Uranium.“ None of the scientists had X-ray eyes: they had no magic power of looking down below the earth“s surface. They were merely putting to use one of the newes
36、t methods of locating minerals in the groundtrees and plants as signs that certain minerals may lie beneath the ground on which the trees and plants are growing. This newest method of searching for minerals is based on the fact that minerals deep in the earth may affect the kind of bushes and trees
37、that grow in the surface. At Watson Bar Greek, a brook (小溪) six thousand feet high in the mountains of British Columbia, Canada, a mineral search group gathered bags of tree seeds. Boxes were filled with small branches from the trees. Roots were dug and put into boxes. Each bag and box was carefully
38、 marked. In a scientific laboratory, the parts of the forest trees were burned to ashes and tested. Each small part was examined to learn whether there were minerals in it. Study of the roots, branches, and seeds showed no silver. But there were small amounts of gold in the roots and a little less g
39、old in the branches and seeds. The seeds growing nearest to the tree trunks had more gold than those growing on the ends of the branches.（分数：5.00）(1).Scientists were flying over a desert or a hilly wasteland or a mountain area in order to search for _ in the ground.（分数：1.00）A.goldB.silverC.uraniumD.
40、minerals 解析：解析 语义理解题。根据文章第一段的内容提到各种金属，而这些金属元素是包含在矿(mineral)里的。故本题选择 D。(2).The study of trees, branches and roots shows that _.（分数：1.00）A.there were larger amounts of gold in the branches than in the seedsB.there were smaller amounts of gold in the roots than in the branchesC.there were less amounts
41、of gold in the seeds growing on the ends of branches than seeds growing nearest to the tree trunks D.there was more gold in the branches than in the roots解析：解析 细节题。从文中最后一句“The seeds growing nearest to the tree trunks had more gold than those growing on the ends of the branches.”(最接近树干的种子比长在树梢的种子要含有更
42、多的金元素)可知答案。故本题选择 C。(3).Which of the following is the best title?（分数：1.00）A.Scientists Searching for Metals with Special PowerB.New Methods of Searching for MineralsC.Gold Could Be Found by Trees and PlantsD.A New Method of Searching for MineralsUsing Trees and Plants 解析：解析 主旨题。通读全文可知文章的大部分(第二至五段)都在讲
43、述通过植物来寻找矿藏。故本题选择 D。(4).Which of the following is NOT mentioned as part of a tree that can help find minerals?（分数：1.00）A.Leaves. B.Roots.C.Branches.D.Seeds.解析：解析 细节题。从最后一段可知，通过研究 roots、branches 和 seeds可判定地下是否有矿产，而 leaves在文章中却没有提到。故本题选择 A。(5).The scientists were searching for minerals by using _.（分数：1
44、.00）A.X-rayB.magic powerC.a special instrumentD.trained eyes 解析：解析 细节题。从文章第一段的第一句“two scientists looked down with trained eyes at trees and bushes”(两位科学家用受过训练的眼睛观察树木和灌木)可知答案。故本题选择 D。四、Text 2(总题数：1，分数：10.00)We have heard a lot about the health benefits of tea, especially green tea. It is high in poly
45、phenols, compounds with strong antioxidant activity that in test-tube and animal models show anticancer and heart-protective effects. Good clinical studies are few, however, and although physicians tell their patients to drink green tea, there hasn“t been any definite proof of the value of that advi
46、ce. A team of Japanese researchers was able to link green tea consumption with decreased mortality from many causes-including heart disease. The researchers tracked 40,530 healthy adults ages 40 to 79 in a region of northeastern Japan where most people drink green tea, following them for up to 11 ye
47、ars. Those who drank five or more cups of green tea a day had significantly lower mortality rates than those who drank less than one cup a day. There were also fewer deaths from cardiovascular disease. But no such association was seen with deaths from cancer. Nor was consumption of oolong or black t
48、ea connected with any decrease in mortality. Those teas are easier to be combined with oxygen in processing, which not only darkens the color of the leaves and changes their flavor but also reduces their polyphenol content. Coffee is more complicated. It has received both gold stars and black marks
49、in medical literature. It, too, contains antioxidants, although they are less well studied than tea polyphenols. Evidence for the health benefits of coffee is growing, however. A group of investigators from Finland, Italy and the Netherlands reports that coffee seems to protect against age-related decline in mental capacity. The scien
