8个点可以连成（ ）条线段．
A．10
B．16
C．28
D．32
1+2+3+…+7=28（条）；
答：8个点，一共可以连28条线段．
Most young people don't want _____ the kind of life that their parents ______. [ ]
A. to lead; used to live
B. living; used to live
C. to live; used to living
D. leading; used to live
信号传递原则是引导原则的延伸。信号传递原则要求根据公司的行为判断它未来的收益。 ( )
