Please take these notebooks _____ your brother. [ ]
A. to
B. in
C. at
D. out
答案:A
120型空气制动机如何提高缓解波速?
骨巨细胞瘤的好发年龄是()
A.5~9岁
B.10~19岁
C.20~40岁
D.41~60岁
E.61~80岁