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听力原文：W: Well, how are you doing?
M: FinE.The computer section is coming along nicely. I should be finished with it by this afternoon.
W: Oh. that is great. But, I need to pull you off the computers for a little while and pm you on something elsE.
M: Something else?
W: Yeah, yeah. Listen. you know about electricity, don't you?
M: Well, as that is the power source for most computers. I do possess a rudimentary knowledge of it of coursE.
W: Oh. that's great! That's just what I wanted to hear.
M: Uh, why?
W: Because of this
M: The main circuit box?
W: That's right. Notice something odd about it?
M: Well yes. None of the wires appear to be attacheD.
W: Nobody gets to the heart of a problem as quick as you. Up to now. we've been powering the place with a generator, but it's time for that to stop. I want you to fix the circuit box.
M: Fix it?
W: Yeah. you know. attach the wires.
M: Uh. am I to understand that you wish me to wire your building?
W: No. no. 1 don't wish you to d0 it. 1 want you to do it. You got everything you need here: transformer, wire, and fuses.
M: While I do know something about electrical currant. I am not a certified electrician.
W: Did I say you had to be?
M: You don't understanD.This job requires the services of a true professional.
(20)
A.He is a professional electrician.
B.He possesses a basic knowledge of electricity.
C.He knows nothing about electricity.
D.Electricity is his major.