煮沸消毒是把物品在100℃的沸水中煮（），可杀灭微生物繁殖件。
A.8～lOmin
B.6～8min
C.4～6min
D.3～5min
参考答案：D
—What a beautiful purse! Can you tell me ________?
—Sure, in Wuhan Plaza. [ ]
A. where did you buy it
B. where you bought it
C. when did you buy it
D. when you bought it
胃肠道类癌中，最好发的部位是（）
A.小肠
B.十二指肠
C.阑尾
D.结肠
E.直肠
