问题:单选题The main purpose of this passage is to ______.A Trace the historical progression of tea from its origins to the present day.B Give brief highlights from the history of the cultivation of tea.C Provide an anecdotal account how tea became a drink.D Highlight some important elements of the history of preparing and drinking tea.E Argue against the notion of tea drinking as a valid social art.
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问题:单选题It can be inferred from the passage that the isotope record taken from ocean sediments would be less useful to researchers if which of the following were true?A It indicated that lighter isotopes of oxygen predominated at certain times.B It had far more gaps in its sequence than the record taken from rocks on land.C It indicated that climate shifts did not occur every 100,000 years.D It indicated that the ratios of oxygen 16 and oxygen 18 in ocean water were not consistent with those found in fresh water.E It stretched back for only a million years.
问题:单选题In order to increase revenues, a cellphone company has decided to change its fee structure. Instead of charging a flat rate of $20 per month and $0.05 for every minute over 200 minutes, the company will now charge $50 per month for unlimited usage. Which of the following is a consideration that, if true, suggests that the new plan will not actually increase the company’s revenues?A A rival company, which charges no start-up fee, offers an unlimited calling plan for $40 per month.B Two-thirds of the company’s customers use less than 500 minutes per month.C Studies have shown that customers using unlimited calling plans will increase their monthly usage of minutes by over 50 percent.D One-fifth of the company’s customers use in excess of 1,000 minutes per month.E In recent months the company has received several complaints of insufficient signal strength and poor customer service.
问题:单选题For hundreds of years, pearl divers have gathered pearls directly from mollusks on the seafloor. This is an extremely risky profession, exposing the divers to risks of drowning, air embolism, and shark attacks. Still, as long as society demands authentic cultured pearls, these brave divers must continue to risk their lives. Which of the following statements, if true, most seriously weakens the conclusion above?A Shark attacks on pearl divers have decreased steadily over the last three decades because of declining shark populations.B Cultured pearls are generally considered more beautiful than those made by artificial means.C Robotic pearl harvesters can gather pearls faster and at less cost than human divers, although they may disturb aquatic communities.D Part of the value of cultured pearls derives from the exotic way in which they are obtained.E With the proper equipment and training, a diver employing scuba gear can harvest three times as many pearls per hour as can a free air diver.
问题:单选题A study by a group of dentists has concluded that regular use of a certain brand of mouthwash is as effective as flossing in preventing gum disease. The mouthwash company has released a television ad suggesting that people who do not like flossing can now rely solely on mouthwash and brushing to maintain good dental health. A leading manufacturer of dental floss brought a lawsuit against the mouthwash company demanding that the advertisement be discontinued on the grounds that it is misleading. Which of the following, if true, provides the strongest support for the dental floss company’s claim that the advertisement is misleading?A The dental floss manufacturer is concerned that it will lose market share in the dental health market because the advertisement encourages people to switch from dental floss to mouthwash.B The dental floss company claims in its own advertisements that brushing and flossing after every meal is the most effective way to maintain good dental health.C Although mouthwash is an effective deterrent to gum disease, it is less effective than dental floss at removing plaque and preventing cavities between teeth.D Per usage, mouthwash is three times more expensive than dental floss, if the recommended amounts of both products are used.E The dentists who conducted the study on the effectiveness of mouthwash in preventing gum disease obtained their funding for the study from a company that manufactures mouthwash.
问题:单选题Although many people would not believe it, the mosquito is actually the most dangerous animal in Africa. While the bite of the black mamba is invariably lethal when untreated, this dreaded snake kills only a few dozen people per year. Hippopotami, with their immense strength and foul dispositions, kill hundreds of people per year in rivers and lakes, but the mosquito is still more dangerous. Mosquitoes bite hundreds of millions of people in Africa every year, and they infect over a million each year with malaria, a disease that is often fatal. Which of the following questions would be most useful in evaluating the claim made above regarding the mosquito?A Could a person survive an attack by a black mamba if that person received prompt medical attention?B What criteria are used to determine which animal is the “most dangerous” animal?C Could the incidence of mosquito bites be decreased through the judicious use of pesticides and insect repellent?D Does malaria kill more people per year in Africa than tuberculosis?E How does the percentage of people who survive hippopotamus attacks in Africa each year compare with the percentage of people who survive mosquito bites?
问题:单选题Approximately $120 billion in venture capital is estimated as having poured into technology stocks during the late 1990s, creating a valuation bubble that burst in 2000.A Approximately $120 billion in venture capital is estimated as having poured into technology stocks during the late 1990s, creatingB During the late 1990s approximately $120 billion in venture capital is estimated to have poured into technology stocks and createdC During the late 1990s it is estimated that there was approximately $120 billion in venture capital that was poured into technology stocks, creatingD It is estimated that during the late 1990s approximately $120 billion in venture capital poured into technology stocks, creatingE It is estimated that there was approximately $120 billion in venture capital that poured into technology stocks during the late 1990s and created
问题:单选题According to the passage, which of the following is true of the ratios of oxygen isotopes in ocean sediments?A They indicate that sediments found during an ice age contain more calcium carbonate than sediments formed at other times.B They are less reliable than the evidence from rocks on land in determining the volume of land ice.C They can be used to deduce the relative volume of land ice that was present when the sediment was laid down.D They are more unpredictable during an ice age than in other climatic conditions.E They can be used to determine atmospheric conditions at various times in the past.
问题:单选题The population of peregrine falcons declined rapidly during the 1950’s and 1960’s and reached an all-time low in the early 1970’s. The decline was attributed by scientists to the widespread use of the pesticide DDT in rural areas. Which of the following, if true, gives the strongest support to the scientists’ claim?A DDT was not generally in use in areas devoted to heavy industry.B In the time since the use of DDT was banned in 1972, the population of peregrine falcons has been steadily increasing.C Peregrine falcons, like other birds of prey, abandon eggs that have fallen out of the nest, even if the eggs remain intact.D Starlings, house sparrows, and blue jays-birds the peregrine falcon preys on were not adversely affected by DDT in their habitats.E Other birds of prey, such as the osprey, the bald eagle, and the brown pelican, are found in the same areas as is the peregrine falcon.
问题:问答题A call to Rosie’s Psychic Hotline costs $5.99 for the first 2 minutes and $1.99 for each additional minute. Stuart called the hotline for x minutes, where x is an integer. How many minutes long was the call? (1) The total charge for the call was $11.96. (2) The charge for the last 3 minutes of the call was $0.01 less than half the total cost of the call.
问题:单选题According to the passage, the caste system would affect all except which of the following scenarios in a caste-observant Indian person’s life?A A Brahman is having dinner with foreign visitors and is offered either a hamburger or a bowl of rice.B A Vaishya mother is considering which of the young women in the local town would make suitable marriage prospects for her son.C Two Sudra teenagers engage in a foot race, and the younger of the two wins the race.D A 40-year-old man from the Untouchable caste has moved from the countryside to a large city and must look for work in order to support his family.E The home of a Kshatriya family is located near a city sewer line, which bursts one day and floods the family’s garage.
问题:单选题The author most likely mentions James Joyce’s childhood, family, and education to serve what purpose?A To suggest that he had to write in order to make a livingB To suggest that he became a writer because of his father’s influenceC To provide the background and cultural context for his literary workD To provide evidence that his literary genius was present when he was a childE To explain his opposition to Catholicism and socialism in his later life
问题:单选题After his 1962 season, in which he set a record for on-base percentage, Mitch McAlister left his old team and signed with the Springfield Argonauts, with an annual salary, of $550,000 and was the highest salary in professional baseball at that time.A Argonauts, with an annual salary of $550,000 and was theB Argonauts, earning $550,000 per year and it was theC Argonauts for a yearly wage of $550,000, being theD Argonauts, with annual pay of $550,000 per year, which was theE Argonauts for an annual salary of $550,000, the
问题:单选题Rising tides of unemployment claims across the state has led the governor to declare the economy to be in a state of emergency.A Rising tidesB Because the rising tideC The tide is risingD The rising tideE The rising of the tide
问题:问答题Two cyclists are racing up a mountain at different constant rates. Cyclist A is now 50 meters ahead of cyclist B. How many minutes from now will cyclist A be 150 meters ahead of cyclist B? (1) 5 minutes ago, cyclist A was 200 meters behind cyclist B. (2) Cyclist A is moving 25% faster than cyclist B.
问题:问答题A rectangle is equal in area to a square with sides of length 12. Is the diagonal of the rectangle greater in length than 20? (1) The rectangle has a length of 16. (2) The rectangle has a width of 9.
问题:问答题Is 34x5? (1) x20 (2) x5
问题:单选题Nutritionists say that you cannot eat enough fruits and vegetables, arguing that it provides nutrition essential to health.A that it provides nutritionB that they provides nutritionC they provide the nutrientsD it provides the nutrientsE that they provide the nutrients
问题:问答题Is y between 1 and 2, exclusive? (1) y2 is less than y (2) y2+y is between 1 and 2, exclusive
问题:单选题According to local tradition, Sultan Abu ibn al-Hasan founded the East African trading state of Kilwa in the mid-tenth century. Professor Ascalon, however, argues that Sultan al-Hasan did not rule in Kilwa until at least a century later. Which of the following, if true, provides the strongest support for Professor Ascalon’s position?A The Hunsu Kubwa Palace, the largest stone structure in sub-Saharan Africa prior to the eighteenth century, dates to the rule of Sultan Sulaiman in the fourteenth century.B The oldest mosque on the island, which has traditionally been attributed to the reign of Abu ibn al-Hasan, has a foundation dating to ca. 800 C.E.C The Kilwa Chronicle. a document based on Kilwa oral history that has been shown to be unreliable on matters of chronology, dates the rise to power of Sultan al-Hasan to the year 957 C.E.D Silver and copper coins bearing the name of Abu ibn al-Hasan have been found in archeological sites dating from the late eleventh to the fourteenth centuries, but none have been found in sites dating earlier than the late eleventh century.E Archeological records suggest that the island of Kilwa enjoyed a period of economic prosperity beginning in the mid-eleventh century.