考研每日一练(2019/7/30) |
第1题:To produce the upheaval (激变) in the United States that changed and modernized the domain of higher education from the mid-1860s to the mid-1880s, three primary causes interacteD、The (1) of a half-dozen leaders in education provided the personal force that was needeD、 (2) , an outcry (呐喊) for a fresher, more practical, and more advanced kind of instruction (3) among the alumni (校友) and friends of nearly all of the old colleges and grew into a movement that overrode (压倒) all (4) opposition. The aggressive "Young Yale" movement appeared, demanding partial alumni control, a more (5) spirit, and a broader course of study. The graduates of HarvardCollege simultaneously (6) to relieve the college’s poverty and demand new (7) .Education was pushing toward higher standards in theEast by (8) off church leadership everywhere, and in the West by finding a wider range of studies and a new (9) of public duty. The old-style classical education received its most crushing (10) in the citadel (城堡) of HarvardCollege, (11) Dr.CharlesEliot, a young captain of thirty-five, son of a former treasurer of Harvard, led the (12) forces. Five revolutionary advances were made during the first years ofDr.Eliot’s (13) They were the elevation and amplification of entrance requirements, the enlargement of the (14) and the development of the (15) system, the recognition of graduate study in the liberal arts, the raising of professional training in law, medicine, and engineering to a postgraduate level, and the fostering (培养) of greater (16) in student life. Standard of admission were sharply advanced in 1872—1877. (17) the appointment of a clean (院长) to take charge of student affairs, and a wise handling of (18) , the undergraduates were led to regard themselves more as young gentlemen and (19) as young animals. One new course of study after another was (20) —science, music, the history of the fine arts, advanced Spanish, political economy, physics and international law. A.when B.where C.which D.that |
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第2题:我国现阶段按生产要素分配取得的收入有 A、股份公司股票持有者的股息收 B.股份合作制企业的投资分红收入 C.房屋出租者取得的租金收入 D.信息机构提供信息的信息收入 |
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第3题:二元函数![]() A、连续,偏导数存在. B、连续,偏导数不存在. C、不连续,偏导数存在. D、不连续,偏导数不存在. |
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第4题: 曲线y=lnx与x轴及直线![]() ![]() |
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第5题:新型工业化道路,不是 A.靠武力扩张去掠夺别国资源 B.拼消耗去搞掠夺式经营 C.高投入、高消耗、高污染、低效率的增长方式 D.追求和谐与和平的道路 |
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第6题:设三阶实对称矩阵A的各行元素之和均为3,向量α1(-1,2,-1)T,α2=(0,-1,1)T是线性方程组Ax=0的两个解. (Ⅰ) 求A的特征值与特征向量; (Ⅱ)求正交矩阵Q和对角矩阵A,使得QTAQ=A; (Ⅲ) 求A及 ![]() |
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第7题:关于酶的化学修饰的特点,错误的是
A.最常见的化学修饰是磷酸化和去磷酸化 B.是与酶蛋白水解无关的可逆共价修饰 C.不改变酶的构象 D.酶以无活性和有活性两种形式存在 |
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第8题:设函数y=f(x)在区间[-1,3]上的图形如图:则函数![]() ![]() A. ![]() ![]() C. ![]() ![]() |
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第9题:桂枝与葱白都具有的功效是
A.发汗、温经 B.发汗、行气 C.发汗、助阳 D.发汗、通阳 |
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第10题:The molecules of carbon dioxide in theEarth’s atmosphere affect the heat balance of theEarth by acting as a one-way screen. (1) these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concerned, to pass (2) , they absorb some of the longer-wave-length, infrared emissions radiated from theEarth’s surface, radiation that would (3) be transmitted back into space. For theEarth to maintain a constant average temperature, such emissions from the planet must (4) incoming solar radiation. If there were no carbon dioxide in the atmosphere, heat would (5) from theEarth much more easily. Today, (6) , the potential problem is too much carbon dioxide.Could the increase in carbon dioxide (7) a global rise in average temperature, and could such a rise have serious (8) for human society Mathematical models that allow us to calculate the rise in temperature as a function of the increase (9) ;that the (10) is probably yes. One mathematical model (11) that doubling the atmospheric carbon dioxide would raise the global mean surface temperature by 2.5℃. This model assumes that the atmosphere’s relative humidity remains constant and the temperature decreases with altitude at a (12) of 6.5℃ per kilometer. The assumption of constant relative humidity is important, because water vapor in the atmosphere is another (13) absorber or radiation at infrared wavelengths.Because warm air can hold more (14) than cool air, the relative humidity will be constant (15) the amount of water vapor in the atmosphere increases (16) the temperature rises. (17) , more infrared radiation would be absorbed and reradiated (18) to theEarth’s surface. The resultant warming at the surface could be expected to melt snow and ice, (19) theEarth’s reflectivity. More solar radiation would be absorbed, (20) to a further increase in temperature. A.cause B.turn C.make D.leave |
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