GMAT考试每日一练（2019/1/15）

第1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. In the xy plane, is the point (4, -2) on the line l (1) Point (1, 1) is on line l. (2) The equation x=2-y describes line l.

【单选题】： A     B     C     D

第2题：10件产品中有3件是不合格品，今从中任取两件，则两件中至少有一件合格品的概率为()．

【单选题】： A     B     C     D

第3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 M is a set of five numbers p, q, r, s, and t, is the range of numbers in M greater than 5 (1) The average (arithmetic mean) of p, q, r, s, and t is 5. (2) p-r＞5.

【单选题】： A     B     C     D

第4题：Recent scientific studies have proven that ulcers are caused, at least in part, by the heliobacter bacterium.Dr. Redding has hypothesized that a natural way to prevent and cure ulcers is to eat large amounts of raw broccoli, which contains potent organic compounds that are beneficial to gastric health. All of the following statements supportDr. Redding’s hypothesis,EXCEPT: A、It has been shown that people who consume raw broccoli on a regular basis have a 65 percent lower chance of developing ulcers than do the general population. B、One of the organic compounds found in broccoli has been shown to have an antibiotic effect on the heliobacter bacterium. C、Dr. Redding conducted a study in which groups of patients suffering from ulcers either ate large quantities of broccoli or ate a diet that included no vegetables; several of the patients who ate the large quantities of broccoli showed marked improvement in their conditions. D、Broccoli is one of the most potent dietary sources of antioxidants, the organic compounds shown to combat the free radicals that are thought to cause cancer. E、Test animals with chemically induced ulcers showed some signs of improvement when raw broccoli was incorporated into their diets.

【单选题】： A     B     C     D

第5题：The following questions present a sentence, part of which or all of which is underlineD、Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others. These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard writtenEnglish; that is, pay attention to grammar, choice of words, and sentence construction.Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error. Because a rockslide had blocked much of the passage, the spelunking team was not able of exploring the till extent of the cave. A、the spelunking team was not able of exploring the full extent of B、the full extent was not able to be explored by the spelunking team of C、the spelunking team was unable in exploring, to its full extent, D、therefore the spelunking team was unable to explore the full extent of E、the spelunking team was unable to explore the full extent of

【单选题】： A     B     C     D

第6题：The following questions present a sentence, part of which or all of which is underlineD、Beneath the sentence, you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others. These questions test correctness and effectiveness of expression. In choosing your answer, follow the requirements of standard writtenEnglish; that is, pay attention to grammar, choice of words, and sentence construction.Choose the answer that produces the most effective sentence; this answer should be clear and exact, without awkwardness, ambiguity, redundancy, or grammatical error. Intrigued by the new rules that favored quickness over strength, the decision of the coach was to give more playing time to the team’s smaller athletes. A、the decision of the coach was to give more playing time to the team’s smaller athletes B、the coach decided to give the team’s smaller athletes more playing time C、it was decided by the coach to give the team’s smaller athletes more playing time D、the team’s smaller athletes were given more playing time by the coach E、more playing time was given to the team’s smaller athletes by the coach

【单选题】： A     B     C     D

第7题：某学生在解方程 误将式中的x+1看成x-1，得出的解为x=1． 那么a的值和原方程的解应是()． A．a=1，x=-7 B、a=2，x=5 C、a=2，x=7 D．a=5．x=2

【单选题】： A     B     C     D

第8题：3x2+bx+c=0(c≠O)的两个根为a、β如果又以a+β、aβ为根的一元二次方程是3x2-bx+c=0，则b和c分别为()． A．2，6 B、3，4 C、-2，-6 D．-3，-6 E、以上结果都不正确

【单选题】： A     B     C     D     E

第9题：Since1975thenumberofwomeninupper-levelmanagementinAmericancorporationshaveincreasedby25percent;femaleexecutives'salaries,however,stilllagbehindthoseoftheirmalecounterparts.（） (A)haveincreasedby25percent;femaleexecutives'salaries,however,stilllag (B)hasincreasedby25percent,howevermuchtheirsalarieslag (C)haveincreased25percent;femaleexecutives'salaries,however,stillhavelagged (D)hasincreasedby25percent;femaleexecutives'salaries,however,stilllag (E)haveincreased25percent;theirsalaries,however,stilllag

【单选题】： A     B     C     D     E

第10题：36 If x is an integer and y=4x+3, which of the following cannot be a divisor of y A、5 B、6 C、7 D、9 E、23

【单选题】： A     B     C     D