【简答题】A派生出子类B,B派生出子类C,并且在Java源代码中有如下声明: A a0 = new A();A a1 = new B(); A a2 = new C();下面说法中正确的是:A. 以上三行的声明全部正确. B. 只有第一行能通过编译. C. 前两行能通过编译,但第三行编译出错. D. 三行全部能通过编译,但第二第三行运行时出错.
【简答题】A.He tells her honestly what he thinks about it. B.She can tell by his nonverbal expressions. C.He throws it away after it. D.She can tell by his unusual words.
【单选题】Most of us are taught to pay attention to what is said—the words. Words do provide us with some information, but meanings are (1)_____ from so many other sources that it would hinder our effectiveness...
【简答题】A 派生出子类B,B派生出子类C,并且在源代码中有如下声明:A a0=new A();A a1=new B();A a2=new C();以下哪个说法是正确的?A. 只有第一行能通过编译 B. 第一行和第二行能通过编译,但第三行编译错误 C. 第一至三行能通过编译,但第二三行运行时出错 D. 第一行、第二行第三行的声明都是正确的