消化性溃疡活动期大便隐血阳性提示每天出血量不少于()
A.<1ml
B.2~3ml
C.3~4ml
D.5ml
E.10ml
参考答案:D
I'm too tired to walk. Let's stop ______ a rest. [ ]
A. to have
B. having
C. have
D. not have
变额寿险与万能寿险的最根本区别在于( )。
A.保险金额可以调整 B.保费缴纳灵活C.权利和义务的对称性不同 D.保险责任不同