2010版票据水线采用水溶性红色荧光油墨印制，在紫外光灯下有微弱的（）色荧光反应，被涂改后会发生变化。
A.红
B.蓝
C.绿
D.紫
参考答案：A
— TV and computers are so popular these days.
— Yes, t.hey can _____ our eyes to the outside world.[ ]
A. call up
B. open up
C. tum up
D. take up
