此患者胎儿可发生同父源一样的染色体核型概率是
A．1/4
B．1/8
C．1/2
D．1/6
E．1/12
参考答案：D
Lucy wasn’t _____ yesterday. She cut herself.
A．enough careful
B．careful enough
C．enough carefully
D．carefully enough
谈判的过程有什么样的特点（）。
A.双方施与受的互动
B.互惠但不一定平等
C.各方都有否决权
D.同时含有合作与冲突
