A.aceg
B.ACEG
C.abcdefg
D.abcd
A.Strings=“Gonewiththewind”;Stringt=“good“;Stringk=s+t;
B.Strings=“Gonewiththewind”;Stringt;t=s[3]+“one”;
C.Strings=“Gonewiththewind”;Stringstandard=s.toUpperCase();
D.Strings=“homedirectory”;Stringt=s–“directory”;
A.BufferedReaderbr=newBufferedReader(newInputStreamReader(System.in));
Strings=br.readLine();
B.Strings=br.readLine();
C.Strings=(char)br.read();
D.BufferedReaderbr=newBufferedReader(newInputStreamReader(System.in));
Strings=(char)br.read();
A.ThisisthString
B.Thisisthe
C.String
D.StringThisisthe
A.ThisisthString
B.Thisisthe
C.String
D.StringThisisthe
A.ThisisthString
B.Thisisthe
C.String
D.StringThisisthe
A.Heis
B.yearsoldboy
C.Heis10yearsoldboy.
D.出错