#1 at the end of world war ii, one of russia’s main goals was to a. build a friendly alliance with the united states. b. be sure they would never be attacked again by a western european country. c. avoid having to join the united nations. d. redesign their government as a democracy. #2 what was the name given to the disagreements between the united states and the soviet union at the end of world war ii? a. the cultural revolution b. the cold war c. the great depression d. the dual alliance #3 choose all that are true of korea after 1954. -korea was reunited by the united nations and remains one country. -korea is still divided between a communist north and a democratic south. -both parts of korea are communist today, even though they are separate countries. -south korea has become more prosperous because they have had trade and foreign aid from the united states and other countries. -north korea has heavy industry and a well-armed military, but there are many other problems, including poor farm production and frequent problems with famine.

It is widely assumed that people need to engage in intellectual activities such as solving crossword puzzles or mathematics problems in order to maintain mental sharpness as they age. in fact, however, simply talking to other people—that is, participating in social interaction, which engages many mental and perceptual skills—suffices. evidence to this effect comes from a study showing that the more social contact people report, the better their mental skills. which of the following, if true, most seriously weakens the force of the evidence cited? (a) as people grow older, they are often advised to keep exercising their physical and mental capacities in order to maintain or improve them. (b) many medical conditions and treatments that adversely affect a person's mental sharpness also tend to increase that person's social isolation. (c) many people are proficient both in social interactions and in solving mathematical problems. (d) the study did not itself collect data but analyzed data bearing on the issue from prior studies. (e) the tasks evaluating mental sharpness for which data were compiled by the study were more akin to mathematics problems than to conversation.