花头撕开后可见白色丝状绵毛的药材为
A．辛夷
B．丁香
C．槐花
D．款冬花
E．西红花
参考答案：D
已知关于x的方程x2+（k-5）x+9=0在1＜x＜2内有一实数根，求实数k的取值范围．
—Mum, my little sister is crying all the time.
—Mary, be ! She feels sick. You should take good care of her.
A．patient
B．lazy
C．polite
D．fair
