闸门出厂前应涂底漆和面漆并进行涂层质量检验，其最后一道面漆应在出厂前完成。
参考答案：错
— Now that you like the computer so much, why not buy one?
— Well, I can’t afford ______ computer at present.
A．that expensive a
B．a such cheap
C．a so cheap
D．that an expensive
