外围语法
参考答案：
又叫大语法。它所研究与语法有关的词语知识、语义知识和语音知识。
化妆品生产车间净高不得低于（）。
A.2m
B.2.5m
C.3m
D.4m
E.5m
—Oh, Miss Wang. Your skirt looks nice. Is it new?
—No, I _____ it for three years. [ ]
A. had
B. have bought
C. have had
D. bought
