题目内容

Shewas___herearlytwentieswhenshewentabroad.

A. at
B. on
C. of
D. in

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TheymovedtoBeijing___.

A. in1980s
B. inthe1980
C. inthe1980s
D. onthe1980\'s

Hebegantoworkthere____.

A. onhisfifty
B. ageoffifty
C. whenhefifty
D. inhisfifties

Hewasdoingsomewashing____.

A. ateightyesterdaymorning
B. yesterdaymorningeight
C. yesterdaymorningateight
D. byeightyesterdaymorning

编写空白处代码，使得程序运行输出为：boy dancegirl jumpboy dance程序源代码为：public class Test {public static void main(String[] args) {King king = new1();king.babyAct(new Boy());king.babyAct( 2 );king.babyAct(new Boy());}}class King{void babyAct( 4 baby){baby.activity();}}interface Baby {void 3();}class Boy implements Baby {public void activity() {System.out.println("boy dance");}}class Girl implements Baby {public void activity() {System.out.println("girl jump");}}