Unit 2 Witnessing time句型否定词加比较级表示最高级的含义语法Overview of noun clauses写作介绍古迹建筑考点否定词加比较级表示最高级名词性从句The Great WallThe Great Wall of China is one of the greatest wonders of the world.It winds its way westward over the vast territory of China from the bank of the Yalu River and ends at the foot of snowcovered Qilianshan and Tianshan mountains.It is seldom that we see such a gigantic project in China or elsewhere in the world.Its size is better seen on a map or from an aerial photograph.According to astronauts who looked back from the moon ， of all projects built by man，the Great Wall of China is the most conspicuous seen in space.The construction of the parts which later made up the Great Wall began during the Spring and Autumn Period and lasted into the Warring States Period.Many feudal states built hundreds of li of wall fortifications(防御工事) as boundaries.These unlinked walls were the embryonic form of the Great Wall.The construction work lasted for over 2,000 years，through such dynasties as the Northern Wei，Northern Qi，Eastern Wei，Northern Zhou，Sui，Liao，Kin and Ming.It was during the Ming Dynasty that the Wall took on its present form.The Great Wall is a miracle in human history.No other ancient buildings in the world have been constructed for so long a time，on such a grand scale and at so tremendous a cost.Neil Armstrong ， the first man who set foot on the moon ， reported that there are only two manmade works that can be identified from space and the moon.One is the Great Wall of China；the other is the dykes of Holland.Former U ． S.president Nixon said ， that only a great nation could build such a great wall.The Wall well deserves its ...
