商品的需求曲线
参考答案：
根据需求表中商品的不同价格—需求量组合在平面坐标图上所绘制的一条曲线。
排便时和排便后剧烈疼痛，且流鲜血，便秘
A．"铅管"征B．"鹅卵石"征C．"鸟嘴"征D．"杯口"征E．充盈缺损
-- So what is the procedure?
--- All the applicants ______ before a final decision is made by the authority.
A．interviewed
B．are interviewing
C．are interviewed
D．are being interviewed
