GMAT考试易错题（2019/5/16）

第1题： 一个圆以原点为圆心，一条直线与它相切与(-根号2，根号2)，问该直线斜率

【分析题】：

第2题：方程 的解是()． A．5 B、4 C、3 D、2 E．1

【单选题】： A     B     C     D     E

第3题：Read the argument and the instructions that follow it, and then make any notes that will help you plan your response. Write your response on a separate sheet of paper. If possible, type your essay on a word processor. A、spokesman for a dairy company issued the following statement: Many consumers buy organic milk because they are concerned about the consequences of the widespread use of recombinant bovine growth hormone and antibiotics in the conventional dairy industry. These concerns, however, are unfoundeD、While bovine growth hormone has been shown to produce significant developmental effects in cattle, no study has ever shown that its presence in commercial milk has had any developmental effects on human consumers. Regarding antibiotics, while it has been argued that large-scale, preemptive use of antibiotics in cattle feed can interfere with the animals’ immune systems and can lead to the proliferation of antibiotic-resistant strains of bacteria, neither of these effects affect the quality of the milk produced by cattle that are fed antibiotics. Therefore, there is no reasonable justification for a consumer to pay $5 for a gallon of organic milk when a perfectly good gallon of conventional milk can be had for half the price. Discuss how well reasoned you find this argument. In your discussion, be sure to analyze the line of reasoning and the use of evidence in the argument. For example, you may need to consider what questionable assumptions underlie the thinking and what alternative examples or counterexamples might weaken the conclusion. You can also discuss what sort of evidence would strengthen or refute the argument, what changes in the argument would make it more logically sound, and what, if anything, would help you better evaluate its conclusion.

【分析题】：

第4题：The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether A、 Statement (1)ALONE、is sufficient, but statement (2) alone is not sufficient. B、 Statement (2)ALONE、is sufficient, but statement (1) alone is not sufficient. C、BOTH statements TOGETHER are sufficient, but NEITHER statementALONE、is sufficient. D、EACH statementALONE、is sufficient. Ｅ. Statements (1) and (2) TOGETHER are NOT sufficient. If n is an integer, and n≠0, is [*] a positive integer (1) n2=25 (2) 5n=25

【单选题】： A     B     C     D

第5题： A、car manufacturer periodically discounts certain car models to its dealers to coincide with intensive advertising campaigns focused on those cars.After analyzing the results of this program, the manufacturer found that sales of the discounted cars were strong, but it also concluded that it could reap greater profits if it did not hold promotions in this way. Which of the following statements, if true, best accounts for the manufacturer’s conclusion about profitability A、Some consumers worry that discounted cars are more likely to be defective. B、The car manufacturer had not been effective in controlling the production costs of the cars, and these rising costs ate into the manufacturer’s profits. C、Although dealers requested large numbers of the cars at discounted prices, they generally sold the cars at the normal retail price, thereby keeping more of the profit for themselves. D、Many consumers buy large-ticket items, such as cars, only when they are on sale. E、The manufacturer’s intensive advertising campaign did not sufficiently emphasize the cars’ high levels of performance on road tests.

【单选题】： A     B     C     D