The survey about childhood in the Third World shows that the struggle for survival is long andhard. But in the rich world, children can 1 from a different kind of poverty - of the spirit. 2
Read the advertisements carefully .Then answer the questions that follow. INTERESTED INCHILDCARE? Qualified person ofpreschool teacher needed for busy childcare center , south of the river .Full-time
、
为单位圆上不重合的两个定点，
为此单位圆上的动点，若点
满足
，则点