阅读下面短文，在答题卡相应位置处填入1个适当的单词或括号内单词的正确形式。
“Traveling to China seems like traveling to another world. Its many famous scenic attractions impressed me ____ (great),”an American said. The following is ____ he wrote on his website.
My friends and I had a family visit in Xi'an,____ old city with a long history in China. The hosts were retired or stayed at home without a job, and they were friendly to ____ (visit) from different countries coming their homes.
We ____(taste) the true home-cooked dishes in the home of the family that we visited. For in-homing dinner, the host would prepare a list of menus in advance (提前). Our tour guide asked ____ (we) for advice about the food, so the host would try to cook what we wanted ____ (eat) at his home. We just enjoyed the locally cooked dishes. It was quite a different and exciting experience.
Many foreigners enjoy ____ (learn) how to make Chinese dumplings. We were also ____ (offer) a general cooking class in the local family. The host taught us to make dumplings step by step with lots of patience. And we didn't need to pay any money ____this. Travel China Guide offers this kind of service free of charge.
The family visit in Xi'an was a good chance for us to get to know Chinese people's daily life.
的
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两点，要围垦出以
为一条对角线的平行四边形区域建制造厂。按照规划，围墙总长为
．在设计图纸上，建立平面直角坐标系如图（
为
，
的坐标满足的方程是
