【OG20-P603-742题】Country X's recent stock-trading scandal should not diminish investors' confidence in the country‘s stock market. For one thing, the discovery of the scandal confirms that Country X has a strong regulatory system, as the following considerations show. In any stock market, some fraudulent activity is inevitable. If a stock market is well regulated, any significant stock-trading fraud in it will very likely be discovered. This deters potential perpetrators and facilitates improvement in regulatory processes. In the argument, the portion in boldface plays which of the following roles?

Lyme disease is caused by a bacterium transmitted to humans by deer ticks. Generally, deer ticks pick up the bacterium while in the larval stage by feeding on infected white-footed mice. However, certain other species on which the larvae feed do not harbor the bacterium. If the population of these other species were increased, more of the larvae would be feeding on uninfected hosts, so the number of ticks acquiring the bacterium would likely decline.Which of the following would it be most important to ascertain in evaluating the argument?

It can be inferred from the passage that the author believes which of the following about women's relationship to politics in the nineteenth-century United States?

【OG20-P178-212题】What is the difference between the sixth and the fifth terms of the sequence 2, 4, 7,... whose nth term is n + 2n-1?

【OG20-P176-198题】 In a certain sequence, the term xn is given by the formula xn=2xn−1−12 (xn−2) for all n≥2 ​. If x0 =3 and x1 = 2, what is the value of x3 ?

【OG20-P176-196题】If [x] is the greatest integer less than or equal to x, what is the value of [-1.6]+[3.4]+[2.7] ?

【OG20-P175-189题】 If pq

【OG20-P175-186题】David has d books, which is 3 times as many as Jeff and 1/2 as many as Paula. How many books do the three of them have altogether, in terms of d ?

【OG20-P174-183题】The graph of which of the following equations is a straight line that is parallel to line ℓ in the figure above?

【OG20-P173-177题】In the figure shown, if the area of the shaded region is 3 times the area of the smaller circular region, then the circumference of the larger circle is how many times the circumference of the smaller circle?