导游服务与其它旅游服务相比，无疑居于（）地位。
A．次要
B．主导
C．中心
D．协调
参考答案：C
It was still _____ range of my gun, _____ I didn't want to shoot at it any longer. [ ]
A. out of; but
B. beyond; however
C. within; but
D. on; so
地榆的功效是（）。
A.凉血止血
B.收敛止血
C.化瘀止血
D.温经止血
E.补虚止血
