单选题13. Growing grapes in greenhouses containing air enriched with carbon dioxide increases crop yields, an effect that is enhanced when the growing temperature is also raised several degrees. Although enclosed cultivation is impractical in vineyards, increases in yields from grape cultivation in the open air can be expected because emissions from the burning of fossil fuels will almost certainly lead to an increase in the carbon dioxide content of atmospheric air over the next century. Which of the following, if true, most weakens the argument? ______

单选题 ①Historian F. W

单选题. ① Despite winning several prestigious literary awards of the day, when it first appeared, Alice Walker's The Color of Purple generated critical unease over puzzling aspects of its compositions. ②In what, as one reviewer put it, was "clearly intended to be a realistic novel," many reviewers perceived violations of the conventions of the realistic novel form, pointing out variously that late in the book, the narrator protagonist Celie and her friends are propelled toward a happy ending with more velocity than credibility, that the letters from Nettie to her sister Celie intrude into the middle of the main action with little motivation or warrant, and that the device of Celie's letters to God is especially unrealistic inasmuch as it forgoes the concretizing details that traditionally have given the epistolary novel (that is, a novel composed of letters) its peculiar verisimilitude: the ruses to enable mailing letters, the cache, and especially the letters received in return. ①Indeed, the violations of realistic convention are so flagrant that they might well call into question whether The Color of Purple is indeed intended to be a realistic novel, especially since there are indications that at least some of those aspects of the novel regarded by viewers as puzzling may constitute its links to modes of writing other than Anglo-European nineteenth-century realism. ②For example, Henry Louis Gates, Jr., has recently located the letters to God within an African American tradition deriving from slave narrative, a tradition in which the act of writing is linked to a powerful deity who "speaks" through scripture and bestows literacy as an act of grace. ③For Gates, the concern with finding a voice, which he sees as the defining feature of African American literature, links Celie's letters with certain narrative aspects of Zora Neale Hurston's 1937 novel Their Eyes Were Watching God, the acknowledged predecessor of The Color of Purple. ①Gates's paradigm suggests how misleading it may be to assume that mainstream realist criteria are appropriate for evaluating The Color of Purple. ②But in his preoccupation with voice as a primary element unifying both the speaking subject and the text as a whole Gates does not elucidate many of the more conventional structural features of Walker's novel. ③For instance, while the letters from Nettie clearly illustrate Nettie's acquisition of her own voice, Gates's focus on "voice" sheds little light on the place that these letters occupy in the narrative or on why the plot takes this sudden jump into geographically and culturally removed surroundings. ④What is needed is an evaluative paradigm that, rather than obscuring such startling structural features (which may actually be explicitly intended to undermine traditional Anglo-European novelistic conventions), confronts them, thus illuminating the deliberately provocative ways in which The Color of Purple departs from the traditional models to which it has been compared.19. The author of the passage would be most likely to agree with which of the following statements about the letters from Nettie to Celie? ______

单选题Mr. Smith deposited k dollars in a new account at an annual rate of 8 percent compounded quarterly, which of the following represents the value, in dollars, of the money in the account after 2 years?

单选题12+x2=256, where x≠4Quantity A: xQuantity B: 12

单选题 In a physical education class

单选题如果将小数0.123456789101112…无限不循环地把所有整数都列出来，那么小数点后第100位的数字是多少?

单选题 In most coastal regions

单选题有一数列Xk=4×k-3，k分别为7，8，9，4，5，6，10，11，12，问这些数的median等于多少?

单选题The regular price of a certain car is $10,000. If the price is discounted by 20 percent during the first week and the reduced price is then discounted by 5 percent during the next week, how much money

单选题Quantity A: the standard deviation of the odd numbers between 1 and 19 inclusiveQuantity B: the standard deviation of the even numbers between 2 and 22 inclusive

单选题Quantity A: 90 percent of xQuantity B: 110 percent of x

问答题直线2y=6x+4的斜率和在x轴、y轴上的截距分别是多少?

问答题从1到100中无放回地取出两个数，两个数都为6的倍数的概率是多少?

问答题把苹果放进n个抽屉，至少放多少个苹果才能够保证至少有一个抽屉里有两个或者两个以上苹果?

问答题一批货物中12具有特征A，23具有特征B，13两种特征都具有。如果80件货物既没有特征A又没有特征B，那么一共有多少件货物?

问答题A单独完成某项工作需要x小时，B单独完成这项工作需要y小时，假设A，B两人一起工作，需要多少时间完成这项工作。

问答题从15个人中选择5个人，且有3个人不能同时选择，问有多少种选择方法?

问答题某个班一共有30个学生，其中11人参加chess club，13人参加bridge club，还有10人什么也没有参加，问有多少人仅仅参加一个club?