胆囊炎、胆绞痛发作时在背部的反应点多位于：（）
A.胸4椎体
B.胸5、6椎体
C.胸11椎体
D.胸8、9椎体
E.胸6、7椎体
参考答案：D
Between 1974 and 1997, the number of overseas visitors expanded ____ 27%. [ ]
A. by
B. for
C. to
D. in
Excuse me, would you please_______me_______at the next corner?
A．set, down
B．let, down
C．keep,down
D．turn down
