股骨髁间骨折，无明显移位者，采用（）
A.石膏固定
B.夹板固定
C.股骨髁冰钳牵引
D.胫骨结节牵引
E.手术切开复位内固定
参考答案：D
—You don't look well, Don! You'd better see your doctor.
—I ________, but he said there was nothing wrong. [ ]
A. will
B. would
C. had
D. have
宝石有无二色性取决于：（）.
A.化学成分
B.晶体结构
C.生成环境
