位于肘窝中央的结构是()。
A.肱动脉
B.肱二头肌腱
C.肘部淋巴结
D.肱桡肌肌腱
E.旋前圆肌肌腱
参考答案:B
—Mom, where is my MP4?
—Oh, it’s in the bedroom. I _____ it for you.
A.am to get
B.am getting
C.will get
D.am going to get
用科学记数法表示537万正确的是( )
A.5.37×104
B.5.37×105
C.5.37×106
D.5.37×107