题目

 My friends always get better grades than I do. What should I do? _____                 A. Maybe you should not talk to them anymore.        B. Maybe you should ask your parents for help.                                 C. Maybe you should argue with them.                          D. Maybe you should work harder.2．已知a是第二象限角，则$\frac{a}{2}$与$\frac{π}{2}$-α都不是（　　）A．第一象限角B．第二象限角C．第三象限角D．第四象限角