由正中神经和尺神经共同支配的肌为
A．指深屈肌
B．指浅屈肌
C．尺侧腕屈肌
D．掌长肌
E．桡侧腕屈肌
参考答案：A
A low-carbon lifestyle is of great benefit to improve_____ world environment. Nothing can be enjoyed from it until you have____ deep understanding of it, though.
A．a; the
B．/; a
C．the; /
D．the; a
列车的折返方式有哪些？
