负反馈系统的作用是
A.进一步减弱机体的功能活动B.保持机体功能活动 的稳定性C.加强机体功能活动的精确性D.减弱机体功能活动的精确性E.进一步加强机体的功能活动
参考答案:B
子宫内膜异位症常见而突出的临床症状是()
A.痛经
B.月经量过多
C.不孕症
D.性交痛及后骶部坠胀
E.膀胱刺激症
— Anything to drink? What about coffee?
— Er… I think I'll have a cold drink _____ coffee. [ ]
A. other than
B. more than
C. less than
D. rather than