【单选题】It was so quick and easy. A fourteen-year-old boy in Scottsdale, Arizona, put his $50 bill on a color copying machine. Within seconds he transformed $50 into $550, and he was ready to shop.Twenty year...
A.
most children above the age of 14 can fake money
B.
new high technology makes money faking easier
C.
anyone who has a computer can fake money
D.
casual faking machines are called casual for the reason that no skills and planning are required
【单选题】设有下面两个类的定义: class Person { int id; String name; } class Student extends Person { int score; int getScore() { return score; } } 请问类 Person和类Student的关系是( )。