题干
—How long have you been studying in No. 8 Middle School?
—More than two years.
—So it will be less than one year you graduate from it.
—More than two years.
—So it will be less than one year you graduate from it.
A：whe
B：before
C：after
D：since
答案(点此获取答案解析）
B
是三条直线，若
，则
∥
”，得出如下结论：
是两条直线，
是平面，若
，则
是两个平面，
是直线，若
则
；
是三个平面，若
，则