骨巨细胞瘤的好发年龄（）。
A.40～60岁
B.10岁以下
C.20～40岁
D.5～15岁
E.60岁以上
参考答案：C
According to the passage, what is the major interest of the officials of Glacier National Park
A．To limit land development around the park.
B．To establish a new park in Montana.
C．To influence national legislation.
D．To settle border disputes with Canada.
禁止权
