If cubical blocks in a display are stacked one on top of the other on a flat surface, what is the volume of the stack of blocks in cubic centimeters?(1)The volume of the top block is 8 cubic centimeters.(2)The height of the stack of blocks is 10 centimeters.

How many factors does x have, if x is a positive integer?(1) x=pn , where p is a prime number.(2) nn=n+n , where x is a positive integer.

Positive integer n leaves a remainder of 4 after division by 6 and a remainder of 3 after division by 5. If n is greater than 30, what is the remainder that n leaves after division by 30?

38 of all students at Social High are in all three of the following clubs: Albanian, Bardic, and Checkmate. 12 of all students are in Albanian, 58 are in Bardic, and 34 ​ are in Checkmate. If every student is in at least one club, what fraction of the student body is in exactly 2 clubs?

Remembered almost as an epic among America’s 12,000 Bosnian Muslims is the digging of Chicago’s subway tunnels in the early 1900s, one of the proudest of family legends.

【OG20-P446-572题】It can be inferred from the passage that the author believes which of the following to be true of the amphibian extinctions that have recently been reported?

It is unclear whether chimpanzees are unique among nonhuman species in their ability to learn behaviors from one another, or if, when other animals are studied in as much depth, similar patterns would be found.

【OG20-P785-762题】In a speech before the Senate Banking Committee, the chairman of the Federal Reserve painted an optimistic picture of the economy, suggesting to investors the central bank in the near future is not lowering interest rates.

【OG20-P178-207题】Last year the price per share of Stock X increased by k percent and the earnings per share of Stock X increased by m percent, where k is greater than m. By what percent did the ratio of price per share to earnings per share increase, in terms of k and m ?

The prairie vole, a small North American grassland rodent, breeds year-round, and a group of voles living together consists primarily of an extended family, often including two or more litters. Voles commonly live in large groups from late autumn through winter; from spring through early autumn, however, most voles live in far smaller groups. The seasonal variation in group size can probably be explained by a seasonal variation in mortality among young voles. Which of the following, if true, provides the strongest support for the explanation offered?