氟利昂制冷装置工作正常时，制冷剂将少量滑油带入系统不会使（）。A．冷凝器换热性能变差

根据对话内容，从对话后的选项中选出能填入空白处的最佳选项，并在机读卡上将该项涂黑。选项中有两项多余选项。（共5小题;每小题2分,满分10分）
—Peter, are you planning to drive at Robert’s Driving School?
—Yes.   1   .
—Is it expensive?
—Well, it depends.    2   .
—I see. And is the teacher’s car new?
—Yes, but it’s not a big car, and parking is easy.
—Good.    3   .
—I failed it last week.
—Oh what a pity.    4   .
—The traffic lights were red but I didn’t see them and I couldn’t brake in time.
—    5   . You can take the test again. Tell me about your teacher. Is he friendly?
—He’s OK. He’s quite young and kind, but my father will give me my next lessons. He’s cheaper.

A．No, it ws free. B．Did you hit something or…? C．When are you going to take your driving test? D．I’ve had ten lessons already and each one is fourteen pounds. E. You couln’d be more relaxed. F. Never mind. G. Actually, it’s called the Russ Driving School.