既能祛风湿，又能消骨鲠的药物是（）
A.威灵仙
B.防己
C.狗脊
D.独活
E.木瓜
参考答案：A
— Have you seen Shirley since she moved away?
— Yes. I’ve seen her several times. She comes back to visit us ______.
A．at any moment
B．from time to time
C．in no time
D．sooner or later
蔬菜打破休眠期而发生发芽成抽苔变化的过程（）
A.果蔬的呼吸作用
B.果蔬的春化作用
C.果蔬的后熟作用
D.果蔬的老化作用
E.果蔬的腐烂作用
