【简答题】阅读理解。 American schools begin in September after a long summer vacation (假期). There are two terms in a school year: the first term is from September to January, and the second is from February to June....
【简答题】public class Program { public static void main(String[] args) { StringBuffer buff = new StringBuffer("0123456789"); buff.delete(3,5); System.out.println(buff); } } System.out.println(buff)输出的结果是: