结缔组织外痔最常合并的疾病是()
A.直肠息肉
B.肛裂
C.肛 * * 肥大
D.内痔
E.血栓外痔
参考答案:B
32. ---Do you think the weather will be all right this summer?
---No, _______ we’re lucky. The newspaper says it’ll be very hot anyway.
A.unless
B.if
C.though
D.As
下列实验操作错误的是( )
A.分夜时,分夜漏斗中下层溶液从下口放出、上层溶液从上口到出
B.蒸馏时,应使温度计水银球靠近蒸馏烧瓶支管口
C.可用酒精萃取碘水中的碘
D.称量时,称量物一般放在称量纸上,置于托盘天平的左盘,砝码放在托盘天平的右盘