题目

A new college guide in the United States compares educational requirements in seven subjects. These include math, science, writing and United States history or government. The other subjects are economics, foreign language and literature. The free online guide is from the American Council of Trustees and Alumni. The council is a nonprofit group that supports liberal arts education. Its president, Anne Neal, says these areas of knowledge are needed to succeed in a twenty-first century society and an increasingly connected world. Yet she told VOA’s Faiza Elmasry it was surprising how many stud一个圆柱形水桶的侧面积是18.84平方分米，水桶的底面半径是1分米．求水桶的体积．