题干
The boy is having a fever. You'd better damp a towel and lay it ______ his forehead.
A：across
B：within
C：through
D：beyond
答案(点此获取答案解析）
A
个点中任意选两个点连成直线，则所得的两条直线相互平行但不重合的概率等于（ ）
