-Sorry, sir. I must leave for the airport. The plane will _________ off at 8:00.

-OK. You can go first.[ ]

A. take

B. set

C. put

D. turn

顺序执行以下两个语句的输出结果是 【9】 。
String s="我喜欢学习Java!";
System.out.prinfin(s.length());