应用鹰嘴钳拔下前牙时,术者应站在患者
A.左侧后方
B.右侧前方
C.右侧后方
D.左侧前方
E.正后方
参考答案:B
_____ it was very cold, _____ my friend still went swimming in Jialing River this morning.
A.Although; but
B.Although;/
C.But; although
D./;although
目前认为与直肠癌发生无关的因素是
A.痔
B.溃疡性结肠炎
C.日本血吸虫病
D.高蛋白高脂肪饮食
E.直肠腺瘤