“孟母三迁”体现了()对个人成长的影响。
A. 环境
B. 家庭
C. 社会
D. 学校
在下列产品中,最为典型的公共产品为()。
A. 教育
B. 基础设施
C. 国防
D. 社会福利
Two numbers are reciprocalsif their product is equal to 1. If xand yare reciprocals and x&Two numbers are reciprocalsif their product is equal to 1. If xand yare reciprocals and x>1, then y must be:
A. less than -1.
B. between 0 and -1.
C. equal to 0.
D. between 0 and 1.
E. greater than 1.
The edges of a cube are each 3 inches long. What is the surface area, in square inches, of
A. 9
B. 18
C. 27
D. 36
E. 54