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	Some who favor putting governmental enterprises into private hands suggest that conservation objectives would in general be better served if private environmental groups were put in charge of operating and financing the national park system, which is now run by the government.Which of the following, assuming that it is a realistic possibility, argues most strongly against the suggestion above?
	A repair shop can repair 3 fewer bicycles of Model 1 than three times the number of bicycles of Model 2. If one bicycle of Model 1 is replaced by two bicycles of Model 2, then the number of bicycles of each model repaired during the day is the same. What is the total number of bicycles that the shop can repair?
OG16 OG17 GWD OG18 OG19 OG20 OG2022	According to a recent study of consumer spending on prescription medications, increases in the sales of the 50 drugs that were advertised most heavily accounts for almost half of the $20.8 billion increase in drug spending last year, the remainder of which came from sales of the 9,850 prescription medicines that companies did not advertise or advertised very little.
PREP07 Test 2	A certain car averages 25 miles per gallon of gasoline when driven in the city and 40 miles per gallon when driven on the highway. According to these rates, which of the following is closest to the number of miles per gallon that the car averages when it is driven 10 miles in the city and then 50 miles on the highway?
Ready4	By the beginning of the 130s CE, the childless emperor Hadrian was searching for a successor—someone not only who would maintain the policies of his successful reign, but mimicking his grandiose governing style so as to continue the state reforms he had begun during the course of his rule.
190215	n small balls with radius r were put into a cylinder filled with water, and the small balls were completely submerged in the water. The radius of the bottom circle of the cylinder is 4r, and the height of water before and after putting the balls is $$h_1$$ and $$h_2$$. How to express the difference of $$h_2$$ and $$h_1$$ with n and r?
190215	The formula of a straight line in the plane rectangular coordinate system is y = 2x-2. The center of circle O is on this line. The circle and line intersect at P and Q. What is the area of the circle? 1: Center coordinates (5, 8) 2: The difference between the abscissa of P and Q is 2
190207	The number of girls in a class are 1.5 times as many as that of boys. The number of girls learning French is the same as that of boys. The number of students learning French in the whole class accounts for one tenth of the total number. What is the proportion of boys who do not learn French in the class?
	The gypsy moth, which in its caterpillar stage poses a great threat to fruit crops in the state of California, has been subjected to regular spraying of several pesticides by the USDA. These pesticides, while not uniformly successful, have been shown to be effective in killing a broad range of insects in the adult stage. Research has also been done on the effect of dusty visalia beetle on gypsy moth populations. In lab tests, this natural enemy of the gypsy moth successfully controlled gypsy moth population growth by feeding on the cocoons of the moth without harming the fruit trees. Yet, when the USDA released millions of these beetles in the state's orchards, they had little effect.Which one of the following, if true, would offer the most likely explanation for the failure of the USDA's dusty visalia beetle-release program?
Ready4	If $2$ different houses are to be selected at random from a group of $12$ houses on a street and if $p$ is the probability that both houses selected will have even address numbers, is $p < \frac{1}{2}$ ? (1) More than $\frac{1}{2}$ of the $12$ houses have even numbers. (2) The probability that both houses selected will have odd numbers is less than $\frac{1}{4}$ .
OG12 OG15 OG16 OG17 OG18	In a random sample of 80 adults, how many are college graduates?(1)In the sample, the number of adults who are not college graduates is 3 times the number who are college graduates.(2)In the sample, the number of adults who are not college graduates is 40 more than the number who are college graduates.
	At a certain company, 25 percent of the employees are male and 50 percent of the employees are sales staff. What is the number of employees at this company?(1) Exactly 7 of the employees at the company are males who are sales staff.(2) There are 16 more female employees than male employees at the company.
	If on Monday 14 car salesmen showed potential customers cars that were parked in a car lot, how many different cars did they show?(1) On Monday, the car salesmen worked for 8 hours.(2) The ratio of the number of car salesmen working on Monday to the number of different cars shown was 1 to 10.
PREP07 Test 2	The cost of each adult's ticket for a certain concert was $30, and the cost of each child's ticket for the concert was $24. If Hannah purchased tickets for this concert, what was the average (arithmetic mean) cost per ticket? (1) Hannah purchased twice as many children's tickets as adults' tickets. (2) Hannah purchased 4 children's tickets.
Magoosh	At the beginning of January 2003, Elizabeth invested money in an account that collected interest, compounding more frequently than a year. Assume the annual percentage rate of interest remained constant. What is the total amount she has invested after seven years?Statement #1: her initial investment was $20,000Statement #2: the account accrued 7% annual interest
Magoosh	In a certain group, the average (arithmetic mean) age of the males is 28, and the average age of the females is 30. If there are 100 people in the group, how many of them are males?(1) The average age of all 100 people is 28.9 (2) There are 10 more males than there are females.
300难题	Pat will walk from intersection X to intersection Y along a route that is confined to the square grid of four streets and three avenues shown in the map above. How many routes from X to Y can Pat take that have the minimum possible length?
190310	The relationship between a store's profit y and sales x is What's the sales volume of this week? 1: This week's sales were three more than that of the last week. 2: This week's profit was $30 more than that of the last week.
Ready4	In the figure above, if $\frac{b+c}{<font color='#FE8080'>a</font>} = \frac{4}{5}$ , then $b + c =$
OG15 OG16 OG17	The following appeared in a memorandum from the president of Aurora, a company that sells organic milk (milk produced without the use of chemical additives):"Sales of organic food products in this country have tripled over the past five years. If Aurora is to profit from this continuing trend, we must diversify and start selling products such as organic orange juice and organic eggs in addition to our regular product line. With the recent increase of articles in health magazines questioning the safety of milk and other food products, customers are even more likely to buy our line of organic products. And to help ensure our successful expansion, we should hire the founder of a chain of health-food stores to serve as our vice president of marketing."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 explanations 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.