阅读下列短文，从每题所给的四个选项(A、B、C和D)中选出最佳选项。
Celebrities(名人) have become a powerful influence on some people because of their social position and their economic situation.
First，some people admire and imitate stars because they allow themselves to be influenced by the media. Television，radio，and magazines invade(侵扰) the lives of audience with a variety of shows，information，and publications about stars and their lives. For instance，Britney Spears has become the target of paparazzi(狗仔队)．In May，Britney appeared at the front page of the most popular magazines revealing that she married her best friend in Vegas，Nevada. Media also invade stars' lives because reporters know they get high profits from readers who buy and follow their favorite artists' news.
Second，some mad audience imitate their celebrities for their lack of confidence. Some people who are shy and lack personality may find that imitating others will cause a good impression. For instance，my cousin Jenny，who lacks a social life because of her introverted(内向的) personality，believes that acting and dressing like Jennifer Lopez will make her popular in high school.
Finally，several fans of stars imitate them because of peer(同龄人) pressure. Since my niece's girlfriends formed an Antonio Banderas' fan club，she had also joined the group. Although she wasn't a huge fan of his，now she collects most of Banderas' possessions. In fact，when I asked Arianna，my niece，why she was part of Banderas' fan club，she replied with a doubtful tone that she did not wish to be rejected by the other teens.
In conclusion，it is true that celebrities play spectacular roles in their performances in Hollywood，which entertains many people all over the world；however，modern celebrities influence the audience to the point where their fans admire and try to imitate their lives.What does the passage mainly tell us?
| A．Why people are influenced by celebrities. |
| B．The harmful influence of celebrities. |
| C．What kind of people are influenced by celebrities. |
| D．How to avoid the influence of celebrities. |
We can infer from Paragraph 2 that ________.
| A．media are on the side of stars |
| B．stars know how to take advantage of media |
| C．media can give wrong information about stars |
| D．media invade stars' lives for their own good |
Jenny acts and dresses like Jennifer Lopez because ______________.
| A．she admires Jennifer Lopez's personality |
| B．she wants to become famous too |
| C．she wants to change her own personality |
| D．she lacks selfconfidence |
Arianna joined the Antonio Banderas' fan club to ________.
| A．seek encouragement from the star |
| B．be accepted by other teens |
| C．become a real fan of the star |
| D．learn more about the star |
The author of the passage probably believes that ________.
| A．it's easy for people to resist the influence of celebrities |
| B．all young people are easily influenced by celebrities |
| C．it's no good for people to imitate celebrities blindly |
| D．people can improve their personality by imitating their favorite stars |
Pop stars today enjoy what once only belonged to the royalty(皇室）. Wherever they go, people turn out in their thousands to greet them. The crowds go wild trying to catch a brief glimpse of their smiling, colorfully dressed idols. The stars are transported in their chauffeur driven Rolls-Royces, private helicopters or executive aero planes. They are surrounded by a permanent entourage (随从）of managers, press agents and bodyguards. Photographs of them appear regularly in the press and all their comings and goings are reported, for, like royalty, pop stars are news. If they enjoy many of the privileges of royalty, they certainly share many of the inconveniences as well. It is dangerous for them to make unscheduled appearances in public. They must be constantly shielded from the adoring crowds who idolize them. They are no longer private individuals, but public property. The financial rewards they receive for this sacrifice cannot be calculated, for their rates of pay are great.
And why not? Society has always rewarded its top entertainers lavishly. The great days of Hollywood have become legendary ： famous stars enjoyed fame, wealth and adulation (奉承）on an all-time scale. By today's standards, the excesses of Hollywood do not seem quite so spectacular. A single gramophone record nowadays may earn much more in royalties than the films of the past ever did. The competition for the title "Top of the Pops” is fierce, but the rewards are truly huge.
It is only right that the stars should be paid in this way. Don't the top men in industry earn enormous salaries for the service they perform to their companies and their countries? Pop stars earn vast sums in foreign currency—often more than large industrial companies- and the taxman can only be grateful for their massive annual contributions to the exchequer (国库）• So who would begrudge them their rewards?
It's all very well for people in boring jobs to complain about the successes and rewards of others. People who make envious remarks should remember that the most famous stars represent only the tip of the iceberg. For every famous star, there are hundreds of others struggling to earn a living. A man working in a steady job and looking forward to a pension at the end of it has no right to expect very high rewards. He has chosen security and peace of mind, so there will always be a limit to what he can earn. But a man who at-tempts to become a star is taking enormous risks. He knows at the outset that only a handful of competitors ever get to the very top. He knows that years of concentrated effort may be rewarded with complete failure. But he knows, too, that the rewards for success are very high indeed ： they are the payback for the huge risks involved and once he makes it, he will certainly earn them. That's the essence of private enterprise. The author develops the passage mainly by __________.
| A．comparing different ideas |
| B．giving explanations |
| C．inferring |
| D．listing typical examples |
The underlined word “begrudge" in the third paragraph is closest in meaning to __________.
A. be jealous of
B. be satisfied with
C. be anxious about
D, be crazy aboutAccording to the passage, which of the following can match the view of the author?
| A．He who laughs last laughs best. |
| B．If you venture nothing, you will gain nothing. |
| C．He who makes no mistakes makes nothing. |
| D．Success belongs to the persevering. |
The author holds a(n)__________ attitude towards the high income of pop stars.
| A．critical |
| B．approval |
| C．optimistic |
| D．indifferent |
Which of the following is true according to the passage?
| A．People are blind in idolizing stars. |
| B．There is fierce competition in becoming pop stars. |
| C．The government taxes pop stars very little. |
| D．Pop stars'life is more luxurious than that of royalty. |
New rules will let millions of Americans know where more of their food comes from. The law is known as COOL-Country of Origin Labeling.
American Congress first passed the law in 2002. Stores have had to label seafood by country-of-origin since 2005. But industry pressure delayed other requirements until last week.
Products that must now be labeled include fresh fruits and vegetables, muscle meats and some kinds of nuts. But the rules are complex, and many foods are excluded. For example, organ meats are free to be labeled. So are processed foods, including cooked or smoked food.
The United States has imported more and more food in recent years to save money and expand choices. Country-of-origin labeling has become more common lately but has still been limited in many stores.
Food safety is one reason why some shoppers pay close attention to where foods came from. For example, when a large number of people recently got sick from salmonella (沙门菌病），officials blamed peppers from Mexico. Yet the last big food scare involved spinach (菠菜）grown in California. But labeling is also a way for people to know they are getting what they want. Some want to buy local foods or foods from a particular country.
The country-of-origin labeling law gives stores 30 days to correct any violations that are found. Stores and suppliers that are found to be deliberately violating the law could be fined 1，000dollars per violation. Federal inspectors are not to take action to en-force the law for six months to give time for an education campaign.
Some food safety activists say they are generally pleased with the law. They call it a good step that will give people more useful information. What's the regulation in the new rules?
| A．Stores have to label food by its producing date from now on. |
| B．The country-of-origin labeling has to be marked on more food. |
| C．Stores have to label seafood by country of origin. |
| D．Labeling of food should include more useful information. |
Why has more and more food been imported to the United States in recent years?
| A．Because it is economical and provides people with more choices. |
| B．Because the United States is short of food supply. |
| C．Because Americans need more and more food recently. |
| D．Because foreign food is of higher quality than native food. |
Consumers are more concerned about where foods came from because __________.
| A．they are curious about the country of the food origin |
| B．they are particular about the tastes of the food |
| C．they are concerned about food safety and want to get what they want |
| D．most of the shoppers are food safety activists themselves |
The new rules of the country-of-origin labeling law will come into effect __________.
| A．right now |
| B．in a month |
| C．in three months |
| D．in half a year |
Which of the following can be inferred from the passage?
| A．Most Americans prefer imported vegetables to the vegetables grown in local places， |
| B．The government of America will forbid importing peppers from Mexico. |
| C．The law was not fully carried out until last week because of food industry's resistance. |
| D．Store owners are most likely to be the supporters of the law. |
Even plant can run a fever, especially when they're under attack by insects or disease. But unlike human, plants can have their temperature taken from 3，000 feet away straight up. A decade ago, adopting the infrared (红外线）scanning technology developed for military purposes and other satellites, physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which ones are under stress. The goal was to let farmers precisely target pesticide (杀虫剂）spraying rather than rain poison on a whole field, which invariably includes plants that don't have pest(害虫）problems.
Even better, Foley's Remote Scanning Services Company could detect crop problems before they became visible to the eyes. Mounted on a plane flown at 3，000 feet at night, an infrared scanner measured the heat emitted by crops. The data were transformed into a color-coded map showing where plants were running " fevers". Farmers could then spot-spray, using 50 to 70 percent less pesticide than they otherwise would.
The bad news is that Paley's company closed down in 1984，after only three years. Farmers resisted the new technology and long-terra backers were hard to find. But with the renewed concern about pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation. Agriculture experts have no doubt the technology works. " This technique can be used on 75 percent of agricultural land in the United States，" says George Oerther of Texas A & M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago. Plants will emit an increased amount of heat when they are __________.
| A．sprayed with pesticides |
| B．facing an infrared scanner |
| C．in poor physical condition |
| D．exposed to excessive sun rays |
In order to apply pesticide spraying precisely, we can use infra-red scanning to __________.
| A．estimate the damage to the crops |
| B．measure the size of the affected area |
| C．draw a color-coded map |
| D．locate the problem area |
Farmers can save a considerable amount of pesticide by __________.
| A．resorting to spot-spraying |
| B．consulting infrared scanning experts |
| C．transforming poisoned rain |
| D．detecting crop problems at an early stage |
The application of infrared scanning technology to agriculture met with some difficulties. For example，__________.
| A．the lack of official support |
| B．its high cost |
| C．the lack of financial support |
| D．its failure to help increase production |
Infrared scanning technology may be brought back into operation because of __________.
| A．the desire of farmers to improve the quality of their produce |
| B．growing concern about the excessive use of pesticides on crops |
| C．the forceful promotion by the Department of Agriculture |
| D．full support from agricultural experts |
Like all animal species, plant species must spread their off-spring to suitable areas where they can grow and pass on their parents' genes. Young animals generally spread by walking or flying. Because plants don't have that ability, they must somehow hitchhike(搭顺风车). Some plant seeds scatter by blowing in the wind or floating on water. Many other plant species, though, trick an animal into carrying their seeds. How do they do this? They enclose the seeds within a tasty fruit and advertise the fruit's ripeness by its colour or smell. The hungry animal collects and swallows the fruit, walks or flies off, and later spits out the seeds somewhere far from its parent tree. Seeds can thereby be carried for thousands of miles. It may surprise you to learn that plant seeds can resist digestion. In fact, some seeds actually require passage through an animal's body before they can grow.
Wild strawberries offer a good example of hitchhiking tactics. When strawberry seeds are still young and not yet ready to be planted, the surrounding fruit is green, sour and hard. When the seeds finally mature, the berries turn red, sweet, and tender. The change in the berries'colour serves as a signal to birds which then eat the strawberries, fly off, and eventually spit out the seeds.
Naturally, strawberry plants didn't set out with a conscious intention of attracting birds only when their seeds were ready to be dispersed . Nor did birds set out with the intent of planting strawberries. Rather, strawberry plants evolved through natural selection. The sweeter and redder the final strawberry, the more birds spread its ripe seeds ； the greener and more sour the young strawberry, the fewer birds destroyed the seeds by eating berries before the seeds were ready. What does the underlined word "dispersed" in the third para-graph mean?
| A．Spread. | B．Eaten. | C．Born. | D．Planted. |
For plants, which of the following is NOT a way of spreading their offspring to suitable areas?
| A．Hitchhiking. |
| B．Blowing in the wind. |
| C．Floating on water. |
| D．Tracking an animal. |
Which strategy does the example of wild strawberries describe?
| A．The conscious intent of attracting birds. |
| B．Spreading by walking. |
| C．Spreading by flying. |
| D．The strategy of taking a lift. |
Why does the author describe how strawberry seeds are spread?
| A．To show plants are good at adapting to the environment. |
| B．To show strawberry's special way. |
| C．To show the plant has different ways of spreading seeds. |
| D．To show the mystery of plant. |
What's the passage mainly about?
| A．How animals disperse offspring. |
| B．How plants disperse their offspring. |
| C．Plant evolution. |
| D．Plants'hitchhiking on animals. |
UCLA scientists report for the first time on the only known frog species that can communicate using purely ultrasonic(超声）calls, whose frequencies are too high to be heard by humans. Known as Huia cavitympanum, the frog lives only on the Southeast Asian island of Bomeo(婆罗洲）.
Ultrasounds are high-pitched sounds more than 20 kilohertz(kHz) in frequency, which exceeds the upper limit of sounds detectable by humans and is far higher than the 5 to 8 kHz frequencies most amphibians (两栖动物)，reptiles and birds are capable of hearing or producing. Key parts of the ear must be specially adapted to detect ultrasounds.
The frogs can hear sounds up to 38 kilohertz, the highest frequency that any amphibian species has been known to hear, the scientists report. Humans can hear up to about 20 kHz and typically talk at 2 or 3 kHz.
While most of the more than 5，000 frog species worldwide have eardrums that are flat on the side of the head, Huia cavitympanum has eardrums recessed in the side of the skull, similar to mammals.
Peter Narins, UCLA distinguished professor of physiological science and of ecology and evolutionary biology, and Victoria Arch, a UCLA graduate student in ecology and evolutionary biology, spent several nights in the remote area where the frogs live.
" We had very little information suggesting that they would be in this location，" said Arch, lead author of the study. " We found them our first night out. "
The study was published on April 29 in the online journal PLOS ONE, a publication of the Public Library of Science, and is available at
http://dx. plos. org/10. 1371/journal, pone. 05413. Huia cavitympanum mainly live __________.
| A．in all over the world |
| B．in many parts of China |
| C．only on the Southeast Asian island of Borneo |
| D．only on the certain countries' marsh |
This kind of new-found frog can hear each other with up to __________ kHz ultrasounds.
| A．2-3 | B．5 -8 |
| C．more than 20 | D．38 |
If people can hear ultrasounds as frogs do, they should __________.
| A．hear as frogs do carefully |
| B．have a pair of good enough ears like frogs |
| C．concentrate their energy on them |
| D．turn them into common sounds |
According to the passage we can infer that __________.
| A．the result of study is concluded not easily |
| B．some scientists have done a lot of work for the result |
| C．all the frogs have the ability with 38 kHz frequency |
| D．this kind of frogs is as important as animals |
This passage probably appears __________.
| A．on the newspaper | B．on the textbook |
| C．on the website | D．on the report |