我国有一句古话：“儿不嫌母丑，狗不嫌家贫。”下列对这句话理解不正确的是（    ） 

    In the future，life will be much ____. Maybe there will be vision phones in every ____. People can have a medical examination without a ____ or nurse in the room and do some shopping without ____their homes. And what ____education? There will be ____educational programs on the radio or TV. So many children who live in far-away villages don't need to ____to school every day. They can study at home. Each family has a robot. Robots will ____ people do their housework. Perhaps some people will fly to the ____for a holiday and some people can live under the ____.

“春风不度玉门关”描述的景观应该位于我国的（　　）

铁是合成下列哪种物质不可缺少的原料