问题补充：
Most museums are just for looking. But today some of them have things for you to touch.The ＿＿say,“＿＿”
A. signs; Do touch
B. notices; To touch
C. signals; Be touching
D. signs; No touching
答案：
(答案→)A. signs; Do touch
B. notices; To touch
C. signals; Be touching
D. signs; No touching
解析：考查名词辨析和强调。句意为：大部分的博物馆只是供观看的，但是今天其中有一些博物馆里的东西你可以触摸。上面标着“触摸一下！”sign符号，记号，标志； notice通知，注意； signal信号。从上句的But today some of them have things for you to touch. 看出，是让触摸的。Do touch！是祈使句，do用来强调。选A。
