class A { A（） { } } class B extends A { } Which two statements are true？（）
- A、 Class B’s constructor is public.
- B、 Class B’s constructor has no arguments.
- C、 Class B’s constructor includes a call to this（）.
- D、 Class B’s constructor includes a call to super（）.
正确答案:B,D
答案解析:有
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