下图中不属于紫外线应用与防护的是（ ）
A．夜视仪
B．验钞机
C．灭菌灯
D．遮阳帽
答案：A
At first, I didn’t know what______ Facebook was, and now I do know what it is. I have to say, it sounds like ____huge waste of time.
A．/, the
B．/,a
C．the, a
D．a, the
56789+67895+78956+89567+95678=( )
A．388885 B．366665 C．344445 D．333335
