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【单选题】
下面代码执行后，正确的输出结果是多少？ String s1="You are hired!"; System.out.println(s1.replace('h','f')); //用f把字串中的h替换了 System.out.println(s1);A.
You are fired! You are hired!
B.
You are fired! You are fired!
C.
You are hired! You are hired!
D.
You are hired! You are fired!
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举一反三
【简答题】--Who is to be honored on the third Monday in February? --President _____ _____ and President _____ _____.
【判断题】On the third Monday of February the United States honors all of its presidents.
A.
正确
B.
错误
【单选题】Whose birthday does the President’s Day on the third Monday in February commemorate?
A.
George Washington
B.
Ronald Reagon
C.
Thomas Jefferson
D.
Barack Obama