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题库总题数: 9689
做题总人数: 140555
平均每天做题人数: 2337
  • PREP 12版模考真题,题目难度接近实际考试难度,在考前做PREP模考练习,能帮助你体验考试状态,也是检验备考效果、查漏补缺的一种重要手段,更好的练习做题节奏。

    203
    题目总数

    21815
    做题总人数

    71.8%
    平均准确率

    • 【句子改错SC】-10278 -破解版12

      Many industrial robots perform tasks that are ill-suited either to human hands and eyes or are so onerousor strenuous that people do not want to do them.

      来源: 3587人已做 600难度 93.6%正确率

    • 【句子改错SC】-10276 -破解版12

      Because of the Sun, which is 400 times larger than the Moon, but also 400 times farther away from Earth,so both the Sun and the Moon have the same apparent size in the sky.

      来源: 4744人已做 650难度 59.1%正确率

    • 【句子改错SC】-10275 -破解版12

      Although improved efficiency in converting harvested trees into wood products may reduce harvest rates,it will stimulate demand by increasing supply and lowering prices, thereby boosting consumption.

      来源: 3938人已做 650难度 71.1%正确率

    • 【句子改错SC】-10273 -破解版12

      A study of food resources in the North Pacific between 1989 and 1996 revealed that creatures of the seabed were suffering from dwindling food supplies, possibly resulting from increasing sea surface temperatures during the same period.

      来源:精选题库 3315人已做 600难度 54.7%正确率

    • 【句子改错SC】-10271 -破解版12

      Inhospitable places on our planet, from steaming hot springs to the thick ice of the Polar Regions, tend to be populated by specially adapted microbes flourishing, it seems, in these extreme conditions and are therefore called “extremophiles.”

      来源: 3779人已做 600难度 79.5%正确率

    • 【句子改错SC】-10270 -破解版12

      In July 1965 Mariner IV passed by Mars and took the first-ever close-up photographs of another planet, which showed that the Martian surface was like that of the Moon's in that it was pockmarked by moonlike craters and was dry and apparently dead.

      来源: 3112人已做 600难度 75.7%正确率

    • 【句子改错SC】-10269 -破解版12

      Laboratory rats and mice live up to 40 percent longer than usual when fed a diet of at least 30 percent fewer calories than that which they would normally eat, but that otherwise contains all necessary vitamins and nutrients.

      来源: 7224人已做 600难度 69.4%正确率

    • 【句子改错SC】-10268 -破解版12

      Geologists have found that streams in the Karoo basin of South Africa changed suddenly at the end of the Permian period 250 million years ago, from the meandering shape typically found in well-vegetated zones to the braided pattern found in areas without deep-rooted vegetation to hold the soil together.

      来源: 3227人已做 600难度 79.8%正确率

    • 【句子改错SC】-10267 -破解版12

      Without adequate amounts of sleep, people’s newly acquired skills and also new factual information maynot get properly encoded into their memory circuits.

      来源: 3106人已做 600难度 78.4%正确率

    • 【句子改错SC】-10266 -破解版12

      Unlike amateur clammers, who usually dig clams by hand during the summer, professional clammers work year-round, using all weather instruments such as the hydraulic dredge or a 20-foot-long implement known as a bull rake.

      来源: 3570人已做 650难度 73.5%正确率

热门讨论
  • 【句子改错SC】

    Among lower-paid workers, union members are less likely than nonunion members to be enrolled in lower-end insurance plans imposing stricter limits on medical services and requiring doctors to see more patients, and spend less time with each.

  • 【逻辑CR】

    Neither a rising standard of living nor balanced trade, by itself, establishes a country's ability to compete in the international marketplace.  Both are required simultaneously since standards of living can rise because of growing trade deficits and trade can be balanced by means of a decline in a country's standard of living. If the facts stated in the passage above are true, a proper test of a country's ability to be competitive is its ability to

  • 【句子改错SC】

    Glaciers form when the snow, sleet, and hail that fall in a given climatic region exceed the amount capable of being lost through evaporation or melting. 

  • 【问题求解PS】

    Which of the following lists the number of points at which a circle can intersect a triangle?

  • 【问题求解PS】

    If n denotes a number to the left of 0 on the number line such that the square of n is less than  1/100, then the reciprocal of n must be

  • 【数据充分DS】

    【OG20-P292-441题】The range of the numbers in set S is x, and the range of the numbers in set T is y. If all of the numbers in set T are also in set S, is x greater than y ?(1) Set S consists of 7 numbers.(2) Set T consists of 6 numbers.

  • 【句子改错SC】

    Clark and Florence Wallace, a husband-and-wife medical team, worked steadily and efficiently through the night, but sipping their coffee the next morning, she noticed that he seemed disoriented.

  • 【句子改错SC】

    In an America steeped in romanticism, cemeteries were laid out beyond the city as places for a transcendental contemplation of nature, death and duty.

  • 【数据充分DS】

    Each of the numbers w, x, y, and z is equal to either 0 or 1. What is the value of w + x + y + z ?

  • 【问题求解PS】

    Store N gives a 50 percent discount on the list price of all its items and Store W gives a 60 percent discount on the list price of all its items. If the list price of the same item is 20 percent higher in Store W, what percent (more or less) of the selling price in Store N is the selling price of the item in Store W?

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