The clothes are ____________ big. [ ]
A. to
B. too
C. two
答案:B
人类血管神经性水肿的发生原因是
A.C4结合蛋白缺陷B.H因子缺陷C.I因子缺陷D.C1酯酶抑制物缺陷E.P因子缺陷