如图所示,人眼看不见哪一个物体在平面镜中的像?( )
A:a物
B:b物
C:c物
D:a、b、c三物
程序框图如图所示:如果输入x=5,则输出结果为( )
文化是一个民族和国家可持续发展的宝贵物质财富。( )
—Our class will have a party the evening of June 30th. Would you like to come? —Yes, I'd love to, but I'm going to visit my grandparents in Dalian.