下列哪项不是紫外线的作用（）。
A.色素沉着作用
B.杀菌作用
C.红斑作用
D.抗佝偻病作用
E.镇静作用
参考答案：E
— Could you take my place and go to meet Smith?
— _______.
— He is a tall man wearing short hair.
A．Why me this time?
B．Are you familiar with him?
C．How can I recognize him?
D．What would you like to tell me?
目前我国城市绿化开始重视大环境的生态建设，加强城乡结合部、（）的建设。
A、屋顶绿化
B、花园绿化
C、室内绿化
D、通道绿化
