[单项选择]Research in the social science focuses on problems of individuals in contexts such as family, work setting, and society （）
A. in principle
B. at large
C. in short
D. at all

[简答题] As social science research data and government surveys increasingly show, the decline in marriage since the 1960s has been (47)______ by a rise in a number of serious social problems. Children born (48)______ or whose parents divorce are much more likely to experience poverty, abuse, and behavioral and emotional problems, have lower academic achievement, and use drugs more often. Single mothers are much more likely to be victims of (49)______ violence. With the rise in these problems comes high program costs to deal with the effects of the (50)______ of marriage. For children whose parents remain married, however, the benefits are real. (51)______ from these families have been found to have better health and are less likely to be depressed, are less likely to (52)______ a grade in school, and have fewer developmental problems. The (53)______ of such mounting evidence for social policy are immense. Too many welfare programs continue to undermine marriage among the poor and must

[单项选择]At the fall 2001 Social Science History Association convention in Chicago, the Crime and Justice network sponsored a forum on the history of gun ownership, gun use, and gun violence in the United States. Our purpose was to consider how social science history might contribute to the public debate over gun control and gun rights. To date, we have had little impact on that debate. It has been dominated by mainstream social scientists and historians, especially scholars such as Gary Kleck, John Lott, and Michael Bellesiles, whose work, despite profound flaws, is politically congenial to either opponents or proponents of gun control. Kleck and Mark Gertz, for instance, argue on the basis of their widely cited survey that gun owners prevent numerous crimes each year in the Untied states by using firearms to defend themselves and their property. If their survey respondents are to be believed, American gun owners shot 100,000 criminals in 1994 in self-defense—a preposterous number. Lott claims
A. illustrate the influence they have on the issue of gun control
B. refute the claim that private ownership of firearms will deter violent crimes
C. support the thesis that gun ownership leads to more violence
D. show the necessity of method improvement in the study of gun ownership history