1、公共英语五级-65 及答案解析(总分：110.00，做题时间：90 分钟)一、BSection Liste(总题数：1，分数：10.00)BPart A/BI You will hear an interview about Mary Kay. As you listen, answer Questions I to 10 by circling TRUE or FALSE. You will hear the conversation ONLY ONCE.You now have 1 minute to read Questions i to 10.Questions 1 to 10:/I（
2、分数：10.00）(1).In 1935, Mary Kay got married for the first time.（分数：1.00）A.正确B.错误(2).Ben Rogers, Mary Kays first husband, died in World War .（分数：1.00）A.正确B.错误(3).To support her family, Mary Kay worked as a saleswoman.（分数：1.00）A.正确B.错误(4).Mary Kay worked for Mr. Heath in 1963.（分数：1.00）A.正确B.错误(5).In th
3、e state of Texas, Mary Kay started her company.（分数：1.00）A.正确B.错误(6).Mary Kay was 45 years old when she started her company.（分数：1.00）A.正确B.错误(7).Mary Kay Cosmetics has businesses in 37 countries.（分数：1.00）A.正确B.错误(8).Mary Kays second husband died in 1980.（分数：1.00）A.正确B.错误(9).The Mary Kay Ash Charitabl
4、e Foundation supports cancer researches.（分数：1.00）A.正确B.错误(10).Mary Kay stopped running her company in 2000.（分数：1.00）A.正确B.错误二、BPart B/B(总题数：3，分数：10.00)B Questions 11 to 13 are based on the following talk on organic fish. You now have 15 seconds to read Questions 11 to 13./B（分数：3.00）(1).Why do fish f
5、arm operators want to have their fish labeled organic?（分数：1.00）A.It will bring better sales.B.It will save some wild fish.C.It will be good to people health.D.It will make fishing easier.(2).Which of the following is NOT mentioned if fish are to be labeled organic?（分数：1.00）A.Controlled conditions.B.
6、Pollution free water.C.Organic diet.D.Sound packaging.(3).Which of the following is TRUE?（分数：1.00）A.Fish started to be sold with the organic label a few years ago in the US.B.The US government has adopted guidelines recommended by an advisory committee.C.The issue of labeling fish organic wont be so
7、lved very soon.D.The American fishing industry is beginning to lose patience.BQuestions 14 to 16 are based on the following talk on ADD. You now have 15 seconds to read Questions 14 to 16./B（分数：3.00）(1).What is ADD?（分数：1.00）A.Overly active and unable to control their behavior.B.Forget easily and nev
8、er seem to finish task.C.A chemical imbalance in the brain.D.Learning disabilities.(2).Which is one of the side effects of drags?（分数：1.00）A.Lack of self-control.B.Morality problems.C.Sight problems.D.Weight loss.(3).Which of the following statements is TRUE?（分数：1.00）A.The United States and Finland h
9、ave dramatic differences with ADHD among older children and teenagers.B.The American children are rarely treated with medicine, while medication is widely used in Finland.C.Rates and signs of ADHD are about the same in children in Finland as in the United States.D.The study found that two-third of t
10、he Finnish children diagnosed with ADHD had deficits in short-term, memory and self-control.B Questions 17 to 20 are based on the following conversation about population. You now have 20 seconds to read Questions 17 to 20./B（分数：4.00）(1).How many people live in cities now?（分数：1.00）A.30% of the worlds
11、 population.B.40% of the worlds population.C.50% of the worlds population.D.60% of the worlds population.(2).How many people live in areas of poverty, slums in cities?（分数：1.00）A.One billion.B.Two billion.C.Three billion.D.Four billion.(3).What has happened in the city of Freetown, Sierra Leone?（分数：1
12、.00）A.A new bus system has been created.B.Farming has been established within the city.C.Factories have been moved out.D.Health care has been improved.(4).What have researches of all kinds discovered?（分数：1.00）A.There is a serious link between urban poverty and environment.B.There is a noticeable lin
13、k between size of population and urban povertyC.There is a positive link between education and quality of life.D.There is a causal link between climate change and supply of food.三、BPart C/B(总题数：1，分数：10.00)（分数：10.00）(1).The movement of the sun creates periods of _.（分数：1.00）填空项 1:_(2).When the moon is
14、 _ it is a full moon.（分数：1.00）填空项 1:_(3).The development of the first calendar was probably based on _.（分数：1.00）填空项 1:_(4).According to Babylonian astronomers, how many days were there in a year?（分数：1.00）填空项 1:_(5).The _ of the sundials stick marks the passing of time.（分数：1.00）填空项 1:_(6).What is the
15、 hourglass shaped like?（分数：1.00）填空项 1:_(7).In an hourglass, sand drops from the top to the bottom through a small _ in the middle.（分数：1.00）填空项 1:_(8).What timepiece had people developed by the 18th century?（分数：1.00）填空项 1:_(9).When was the international conference that divided the world into 24 time
16、zones held?（分数：1.00）填空项 1:_(10).What is the Greenwich Mean Time called now?（分数：1.00）填空项 1:_四、BSection Use o(总题数：1，分数：20.00)U (31) /Uwith the human eye, a catsU (32) /Uhave more rods than cones,U (33) /Uhelps the cat see in the dark. Cats also have elliptical pupils that open and close faster and can
17、 become larger than our roundU (34) /U. In addition, cats and someU (35) /Unocturnal animals have a mirror like membrane on the back of their eyes, which reflects the light passing through the rods back through them in the, opposite direction, This “double exposure“ allows cats toU (36) /Uwell in ne
18、ar darkness.The human eye changes graduallyU (37) /Uage,U (38) /Uthe changes are critical. In darkness, eyes adaptU (39) /Uwidening the pupils to let in as much light as possible. U(40) /Uyou get older, these muscles weaken and do not respond as wellU (41) /Uthe need to let in more light.The result
19、is a smallU (42) /Uwhen you try to see in poor light. ItsU (43) /Uif your eyes were still young but you were wearing sunglasses at night. There is also evidence that as we age we lose more rodsU (44) /Ucones.In the young eye, rodsU (45) /Ucones by nine to one in the part of the retina called the mac
20、ula. But an autopsy study of older adults found that while the conesU (46) /Uintact, almost a third of the rods in the macula had been lost.The less responsive muscles in the iris also affect the eyes ability to adjust when the intensity of light changes,U (47) /Uas when a car with its headlights on
21、 approaches and then passes.In older eyes, this phenomenon,U (48) /Udark adaptation, takes longer, whichU (49) /Uyou see less well in the dark after being in the light, and vice versa. The diminished number of rods may be a factor, but in addition, the light-sensitive pigment in the rods regenerates
22、 more slowly inU (50) /Ueyes.（分数：20.00）(1).（分数：1.00）填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_填空项 1:_五、BSection Readi(总题数：3，分数：15.00)BText 1/BIf you are tired of watering your plants every day, you might want
23、to try growing them right in the water. And in fact this is not a new idea: People in ancient Egypt were growing plants without soil more than 2,000 years ago. Moreover, the floating gardens of the Aztecs in early Mexico are another ancient example of gardening without soil. Nowadays this technique
24、is widely used. It is called hydroponic gardening.Literally, the term hydroponics means cultivating in water rather than in soil, and in fact normal soil is not used in this process. But plants are plants, and so the concerns of the hydroponic gardener are really much the same as those of any other
25、farmer. Even when they do not grow in soil, all plants need food, stability, oxygen, and protection from disease.The main nutrients required by plants are nitrogen, potassium, and phosphorus. Also, small amounts of other elements are needed. In the ancient hydroponic gardens of Egypt and Mexico, the
26、 growers had to rely on minerals that occurred naturally in the water. In modem hydroponic applications, workers carefully add these important minerals to pure water; in this way, the balance of waterborne nutrients can be controlled, depending on the kind of plants being grown and on the speed of g
27、rowth of the crop.Plants usually get stability from the soil around their roots. Obviously, water cannot provide this. Plants farmed hydroponically are supported either by growing through a mesh over the Water, or by sinking their roots into sand or pea-sized gravel soaked in water. Either way, the
28、plants stay upright, with their leaves exposed to the sun. They need no soil because, in this system, they do not derive nutrients from the medium that gives them stability.Oxygen is another essential requirement. The roots as well as the leaves of all plants must be able to breathe. If insufficient
29、 oxygen reaches its roots, a plant will die. To fulfill this need, hydroponic farmers usually keep the nutrient water flowing all the time. As the water circulates, it is aerated by splashing from one container to another: The splashing process increases the amount of absorbed air in the water.Final
30、ly, plants need a healthy environment. Especially when plants of the same species are grown close together, there is a real danger that diseases may spread quickly. A very clean growing medium will reduce this risk. Soil, the natural planting medium, may contain many harmful diseases or pests, but h
31、ydroponic gardening does not use soil. Starting with pure water and clean sand or gravel, the hydroponic gardener avoids many uncertainties.In these ways, hydroponics can overcome important agricultural challenges. For instance, hydroponic farming is able to produce worthwhile crops in regions where
32、 the soil is too poor for ordinary gardens, or where the supply of water is too scarce for normal irrigation. Also, even in fertile areas, hydroponic greenhouse makes it possible to cultivate small areas extremely densely: This can be very profitable during winter in cold climates, such as Canada or
33、 the Northern United States. Such considerations may not have mattered to the ancient Egyptians or Aztecs, but they are the basis of a thriving hydroponics industry today.（分数：5.00）(1).Which sentence best describes the main idea of the article?（分数：1.00）A.Hydroponic gardening is ideal for locations wh
34、ere water is too scarce for normal irrigation.B.Hydroponic gardening solved the problem of plant stability.C.Hydroponic gardening makes it possible for plants to be grown inside in countries with a cold winter.D.Hydroponic gardening is not only a very old technique but also a very modem one with gre
35、at future potential.(2).Hydroponic gardening（分数：1.00）A.is still used by the Aztecs and the Egyptians.B.takes less room than conventional soil gardening.C.results in many unstable plants.D.is popular in Canada only during the winter.(3).Plants grown hydroponically（分数：1.00）A.usually have a much bigger
36、 harvest.B.are more expensive than plants grown in soil.C.are also called “organic“ fruits and vegetables.D.are really no different than plants grown in soil.(4).Which of the statements is TRUE?（分数：1.00）A.Plants that are grown without soil do not need food.B.The roots as well as the leaves of all pl
37、ants must be able to breathe.C.When plants are grown close together there is less of a chance for disease.D.Soil is a much cleaner planting medium than hydroponic gardening.(5).Which word is closest in meaning to “fertile“ (Paragraph 7)?（分数：1.00）A.Moderate.B.Barren.C.Rich.D.Wet.BText 2/BA lot happen
38、s to your teeth. They are ground, braced, brushed, flossed, polished, drilled, filled, and if you do not take care of them, pulled. For your teeth, proper oral care is as essential as anything else you do for your body and your generally health. Fortunately, if there is any damage to your teeth mode
39、m dentistry techniques make it easier, faster and less painful to get the problem fixed.By definition, dentistry includes the study, diagnosis, treatment and the prevention of disease of the mouth, teeth, gum and jawbones. Todays dentists use sophisticated equipment and pain- preventing medicines, b
40、ut these have not always been around.The earliest historical records of dentistry are from Egypt from around 3600 BC. Aesculapius, a Greek physician who lived around 1250 BC, is credited with the idea of pulling disease teeth. Hippocrates, around 400 BC, wrote of applying ointments and using brandin
41、g irons to treat disease of the mouth. Through the Middle Ages wealthy people were treated by physicians and surgeons, while poor people could look to the local barber to pull painful teeth.Modem dentistry emerged with the release of Pierre Fauchards book The Surgeon Dentist, A Treatise on Teeth. Fa
42、uchard is considered the father of modem dentistry. Later, the first school devoted to teaching dentistry opened in Baltimore in the USA in 1840.Green Vardiman Black invented a foot engine so dentists would have two free hands while using the dental drill. He also came up with the idea that gum dise
43、ase was an infection caused by bacteria. This was later confirmed in 1960. An important contribution was made in 1944 when Dr. Horace Wells, a Connecticut dentist, first used nitrous oxide (laughing gas) as an oral anesthetic; today this method of administering anesthetic is employed for many dental
44、 and medical surgeries. The introduction of fluoride in toothpaste in the 1960s was a huge breakthrough; teenagers and adults today have a 50% better chance of not developing tooth decay.The 1990s saw a change in thinking when it came to fillings for cavities in teeth. Since the early 1800s silver a
45、malgam-a combination of silver, tin and mercury-has been the standard filling compound. But modern fears about mercury poisoning have led many people to have their amalgam fillings replaced with plastic polymer fillings. Besides not having any mercury, plastic polymers have an advantage over metal f
46、illings because the color can be matched to the surroundings tooth and the material can be chemically bonded to the tooth.Dentistry methods are sure to advance even more in the future. Things such as laser technology, which is used to eliminate diseased tissue or weld together damaged parts of teeth
47、, will soon become a common practice in dentists offices. And computer-assisted technology is ushering in new advances in the area of tooth restoration. The primary goal of dentists is to develop early detection methods to prevent dental conditions from turning into dental problems.Caring for your teeth properly will lessen the number of visits you make to the dentist. Brushing properly, flossin
