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听力原文：W: Hey, you. Can't you be a bit faster? You make the whole group wait for you.
M: How can you blame it on me? I'm having trouble in operating this kind of machinE.It is designed for.you right handers.
W: You always complain about these machines. But you are not the only one using your left hanD.
M: Really? I don't know any others who are the same as mE.
W: To tell you the truth, I'm also left-handeD.
M: You?
W: Yeah. You should spend some time getting suited to it in advancE.Then you can do it quickly.
M: Is that what you have done?
W: Yes. In fact, it pays to use both hands.
M: OK, I will try.
What are the two speakers talking about?
A.Using the left hanD.
B.Operating machines.
C.Designing machines.

A.M:
B.you
C.
W:
D.
M:
E.
W:
F.
M:
G.
M:
H.
M:
I.
What
J.Using
K.
B.Operating
L.
C.Designing

【参考答案】

B
解析：推理题。对话以操作机器为主要内容。
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