问题 补全对话，情景问答 给句子选择合适的答语。( ) 1. May I have some oranges?( ) 2. What are you doing now?( ) 3. Who is this?( ) 4. How old is his sister?( ) 5. Are you okay?A. This is my mother.B. No, I hurt my left arm.C. I am eating chicken.D. Sure.E. She is ten years old. 答案 1. D 2. C 3. A 4. E 5. B
，依此可测定导体的电阻，下列说法中正确的是[ ]