围绕本课标题 The Crystal Palace 水晶宫（水晶宫）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：the most extraordinary building of the nineteenth century / the Crystal Palace / built in Hyde Park / for the Great Exhibition of 1851 / different from all other buildings / made of iron and glass / one of the biggest buildings of all time / A great many goods were sent / various parts of the world / a great deal of machinery on display / Nasmyth's steam hammer / travelling was not as easy as it is today / steam boats carried thousands of visitors across the Channel / On arriving in England / taken to the Crystal Palace by train / six million visitors in all / the profits were used to build museums and colleges / moved to South London / until it was burnt down in 1936