【单选题】阅读下列程序并回答问题,在每小题提供的若干可选答案中,挑选一个正确答案。 【程序】 public class Point{ protected int x,y; public Point(int x,int y){ this.x=x; this.y=y; } public Point(int y){ this.x=0; this.y=y; } public Point(){ this.x=-1; ...
【简答题】As the price of a college degree continues to rise, there's growing evidence that the monetary(货币的) payoff isn't quite as big as often advertised. The best estimate now is that a college degree is wor...