题目

阅读理解                                Questionnaire（问卷调查）This questionnaire is about the relationship between your hobby and your job. Please answer the following questions honestly（诚实）. Thank you.★ Are you a man or a woman?   ■ man      □ woman★ What is your job?□ teacher      ■ worker      □ student      □ lawyer      □ others★ How old are you?□ under 10      □ 11～20      □ 21～30      ■ 31～40      □ above 40  ★ How much money do you make a month?□ u12．使函数y=sinx为增函数，且函数值为负数的区间是（　　）A．（0，$\frac{π}{2}$）B．（$\frac{π}{2}$，π）C．（π，$\frac{3π}{2}$）D．（$\frac{3π}{2}$，2π）