起自桡、尺骨背面，止于第一掌骨底的肌是（）
A.旋后肌
B.拇长展肌
C.拇短伸肌
D.拇长伸肌
E.示指固有伸肌
参考答案：B
The engineers are going through with their highway project, （） the expenses have risen.
A. even though
B. just because
C. now that
D. as though
一组数据：6、9、3、3、7、8，其平均数为（）。
