习惯性流产是指自然流产连续发生（）次或（）次以上者。
参考答案：3；3
Maggie has been fortunate to find a job she loves, and________, she gets well paid for it.[ ]
A. sooner or later
B. what's more
C. as a result
D. more or less
什么是科学事实。有何规定和要求，在科学认识中有何作用，获取科学事实的方法是什么
