静脉肾盂造影摄取全尿路造影的最佳时机是（）
A.对比剂注射初
B.对比剂注射中
C.对比剂注射末
D.腹部压迫之前
E.解除压迫之后
参考答案：E
(2013·宁夏银川一中高三第四次考试)Siberian Tigers ________ and killed at such a speed that they will disappear from the earth in the near future.
A．hunted
B．are hunted
C．are being hunted
D．had been hunted
新生儿易发生溢乳的最主要的生理原因是
A．幽门括约肌发育不良B．贲门括约肌松弛C．新生儿爱哭闹D．哺乳量过多，胃过度充盈E．胃蠕动过快
