用来导入已定义好的类或包的语句是()。
A.正确答案BB.
<input type="radio" name="input_12f690a146fc1179822e_2_1" value="choice_0">mainimport 正确
C.D.
<input type="radio" name="input_12f690a146fc1179822e_2_1" value="choice_2">publicclass
<input type="radio" name="input_12f690a146fc1179822e_2_1" value="choice_3">class