颅骨的结构有_________、_________、_________。
参考答案:外板;板障;内板
There is no________ that students will listen attentively in class, if they are _____ The World Cup in South Africa at night
A.probability ; accustomed to
B.possibility ; addicted to
C.need ; drunk with
D.chance ; familiar with
社会保障项目、标准的确立关系,直接影响到社会成员个人的受益程度和社会保障的总体规模与水平。 ( )