OG19新题 题目总数：142 做题总人数：6301 平均准确率：73.6%
If n and k are positive integers, is n/k an even integer?(1) n is divisible by 8.(2) k is divisible by 4.
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Joanna bought only $0.15 stamps and $0.29 stamps. How many $0.15 stamps did she buy?(1) She bought $4.40 worth of stamps.(2) She bought an equal number of $0.15 stamps and $0.29 stamps.
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A citrus fruit grower receives $15 for each crate of oranges shipped and $18 for each crate of grapefruit shipped. How many crates of oranges did the grower ship last week?(1) Last week the number of crates of oranges that the grower shipped was 20 more than twice the number of crates of grapefruit shipped.(2) Last week the grower received a total of $38,700 from the crates of oranges and grapefruit shipped.
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Is │x - y│>│x - z│?(1) │y│>│z│(2) x < 0
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Is x>0?(1) x+3>2(2) x+3
来源：精选题库 829人已做 600难度 61.8%正确率
Is the integer P odd?(1) The sum of P, P + 4, and P + 11 is even.(2) The sum of P – 3, P, and P + 11 is odd.
来源：精选题库 1945人已做 680难度 80.8%正确率
If positive integer x is a multiple of 6 and positive integer y is a multiple of 14, is xy a multiple of 105 ?(1) x is a multiple of 9.(2) y is a multiple of 25.
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A school administrator will assign each student in a group of n students to one of m classrooms. If 3 < m < 13 < n, is it possible to assign each of the n students to one of the m classrooms so that each classroom has the same number of students assigned to it?(1) It is possible to assign each of 3n students to one of m classrooms so that each classroom has the same number of students assigned to it.(2) It is possible to assign each of 13n students to one of m classrooms so that each classroom has the same number of students assigned to it.
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【OG18-P287-403题】If n is a positive integer, what is the tens digit of n ?(1) The hundreds digit of 10n is 6.(2) The tens digit of n + 1 is 7.
来源：精选题库 1000人已做 650难度 60.9%正确率
In a certain office, 50 percent of the employees are college graduates and 60 percent of the employees are over 40 years old. If 30 percent of those over 40 have master's degrees, how many of the employees over 40 have master's degrees(1) Exactly 100 of the employees are college graduates.(2) Of the employees 40 years old or less, 25 percent have master's degrees.
来源：精选题库 819人已做 650难度 80.6%正确率
According to the passage, a major concern of the unenthusiastic book reviewers mentioned in line 33 was to
According to the passage, book review editors pay attention to all of the following in deciding which books should be reviewed in their publications EXCEPT
The passage suggests that, in comparison with the hominid australopithecines, modern humans are
According to the passage, the hominid australopithecine most closely resembled a modern human with respect to which of the following characteristics?
Since 1978 when the copyright law was changed, books that are less than fifty years old must not be photocopied without the publisher’s permission. Thus, any book that has been photocopied since 1978 without the publisher’s permission must be at least fifty years old. The reasoning above exhibits a flaw similar to one in which of the following?
Shirla: In figure skating competitions that allow amateur and professional skaters to compete against each other, the professionals are bound to have an unfair advantage. After all, most of them became professional only after success on the amateur circuit. Ron: But that means that it’s been a long time since they’ve had to meet the more rigorous technical standards of the amateur circuit. Which of the following is most likely a point at issue between Shirla and Ron?
After determining the levels of calcium carbonate and the types of fossilized algae present in core samples taken from the bottom of Lake Titicaca in the Andes, a group of scientists was able to reconstruct the history of precipitation in tropical South America over the past 25,000 years.
Researchers in City X recently discovered low levels of several pharmaceutical drugs in public drinking water supplies. However, the researchers argued that the drugs in the water were not a significant public health hazard. They pointed out that the drug levels were so low that they could only be detected with the most recent technology, which suggested that the drugs may have already been present in the drinking water for decades, even though they have never had any discernible health effects. Which of the following, if true, would most strengthen the researchers’ reasoning?
City resident: These new digital electronic billboards should be banned for light pollution since they are much too bright. Outdoor advertising spokesperson: No, that’s not true. Testing with a sophisticated light meter shows that at night they throw off less light than traditional billboards that are reflectively lit. Your mistaken perception that they are brighter comes from looking directly at the light source—the screen itself. The underlying strategy of the spokesperson’s response to the resident is most analogous to the underlying strategy of which of the following?
Consumer advocate: In our nation, food packages must list the number of calories per food serving. But most of the serving sizes used are misleadingly small and should be updated. The serving sizes were set decades ago, when our nation’s people typically ate smaller portions than they do today, and, as a result, people eating typical portions today consume more calories than the package labeling appears to indicate that they will. It is time package labeling reflected these changes. Which of the following is the main point of the consumer advocate’s argument?