在其他因素不变的情况下,固定成本减少,保本点()
A.升高
B.降低
C.不变
D.不确定
参考答案:B
My pen pal lives ______ the farm with his grandfather. [ ]
A. in
B. on
C. /
D. from
瘀血停滞兼阴血不足所致胃痛,治疗宜选()
A.调营敛肝汤
B.复元活血汤
C.加味四物汤
D.当归补血汤
E.桃仁红花煎