单项选择题
W: Thanks for the note you left for me. M: Oh, then you did get it.
A．She hadn’t sent a thank-you note. B．She hadn’t noticed him. C．She had left him a note. D．She hadn’t gotten his note at first.
A．Five may be too many. B．The decision must be made soon. C．It would be smart to take more. D．Four People are enrolled in them.
A．如果任何产品的资源不足，那种产品就只好涨价。 B．如果任何产品的资源不足，那种产品的价格就直线上升。 C．如果任何产品短缺，那种产品的价格就上涨。 D．只要出现产品短缺现象，产品的价格必将发生变化。