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.
Tuesday, April 25, 2023
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
Tuesday, November 14, 2023
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.
Saturday, November 11, 2023
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
Friday, March 22, 2024
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.
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According to information given in the passage, which of the following statements presents the most accurate comparison of an average ton of coal from Wyoming with an average ton of coal from the Appalachian range in West Virginia?A The former is cheaper and has higher sulfur content than the latter.B The latter is found closer to the surface and contains more sulfur than the former.C The former can help coal-burning power plants meet limits on sulfur dioxide emissions and costs more than the latter.D The latter generates more energy per pound of coal than the former.E The former is found closer to the surface than the latter and helps coal-burnning power plants meet limits on sulfur dioxide emissions.
Saturday, April 27, 2024
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.
Thursday, November 9, 2023
问题:单选题Oil is a nonrenewable resource, whereas sunshine is limitless. So why not run cars on solar power? Because a car powered by solar collecting panels would be fine on a sunny day, but as soon as the sun went behind a cloud, the car would no longer function. Which of the following is presupposed in the argument against running a car on solar power?A Solar power is cleaner than fossil fuels, and it involves less geopolitical risk.B In most of the northern hemisphere, it can be expected that more than 150 days a year will be cloudy.C No system exists for storing solar energy for a car’s use when the car is not in direct sunlight.D No one has yet introduced a commercially viable process for mass-producing solar cells that convert more than 10 percent of incoming sunlight into usable energy.E Consumers accustomed to the rapid acceleration of gasoline-powered cars will not accept the weak acceleration of solar-powered cars.
Thursday, February 16, 2023
问题:单选题The commissioner of a professional sports league dictated that teams could not put players on the field who had a greater than 20 percent chance of suffering a career-ending spinal injury during competition. The commissioner justified this decision as a way to protect players from injury while protecting the league from lawsuits. Which of the following, if true, would most undermine the effectiveness of the commissioner’s new policy?A Spinal injuries can result in paralysis, loss of fine motor skills, and even death.B The previous year, more than seven players in the league suffered career-ending spinal injuries.C The players’ union agrees that the risk of injury is an inevitable part of playing the game at a professional level.D There is no scientifically valid method for determining the likelihood of any player suffering a career-ending spinal injury at any given time.E Players barred from playing because of this new regulation will be entitled to compensation for lost wages at a level determined by the commissioner’s office.
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.
Tuesday, November 22, 2022
问题:单选题In a physical education class, 20 students were tested on archery target shooting. These students were then given a two-day training course in archery technique. The students were tested again and showed a 30 percent increase in accuracy. This result proves that the course was effective in increasing people’s target-shooting accuracy. Which of the following, if true, gives the strongest support to the argument above?A The students were all excellent athletes, and excellent athletes tend to be good at target shooting.B The first testing session functioned as a practice ,session for the second testing session.C The accuracy with which people can shoot arrows is strongly related to the sharpness of their vision.D A similar group of students who were also tested on archery target shooting but were not given the course did not show an increase in accuracy.E Excellence in archery target shooting is an accomplishment achieved by relatively few of the people who take up the sport.
Saturday, October 7, 2023
问题:单选题Although no proof yet exists of the electromagnetic disturbances observed being the results of nuclear weapons testing, diplomats are treating the situation with utmost delicacy.A of the electromagnetic disturbances observed being the results of nuclear weapons testingB regarding the observed electromagnetic disturbances having been the results of nuclear weapons testingC that the electromagnetic disturbances observed were the results of nuclear weapons testingD that nuclear weapons testing resulted in the electromagnetic disturbances having been observedE that the electromagnetic disturbance observed were resulting from nuclear weapons testing
Thursday, December 21, 2023
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The final paragraph plays what role in relation to the rest of the passage?A It offers information that raises doubts about the conclusions expressed in the previous paragraph.B It discusses an alternative view to points stated as facts in the second paragraph.C It restates the question raised in the opening paragraph, using information offered in the second and third paragraphs.D It offers background information for the system described in the two preceding paragraphs.E It summarizes points raised elsewhere in the passage.
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
Thursday, September 22, 2022
问题:单选题According to the information given in the passage, if two20-year-old twins lived on earth, and one of them left on a journey for Alpha Centauri at very close to the speed of light, then managed to survive the journey and return to earth having aged 40 years during the journey, what could she expect to find upon her return to earth?A Her great-grandmotherB Her twin at the age of 20C Her twin at the age of 40D Her twin at the age of 60E Her twin’s great-grandchildren
问题:单选题Which of the following best describes the structure of the passage?A It mentions a puzzling situation, and then describes three approaches people have taken to help understand that situation.B It presents an argument for why something took place, and then offers a refutation of that argument.C It introduces a past phenomenon and then presents three explanations for why the phenomenon took place.D It describes a problem, offers a solution to the problem, and then ofiers reasons why the solution could not work.E It offers three explanations for a phenomenon and then summarizes what all three have in common.
问题:问答题Is 34x5? (1) x20 (2) x5
Tuesday, December 26, 2023