内容导读：
Lesson 11
Don’t Fall， Danny！
Fill in each blank with the proper word from the brackets：
The whole _________ (long) of the Great Wall is more
than 7240 kilometres.
2. The Three Gorges will be the __________(world) biggest
dam.
3. The first person _________(walk) the whole length of
the Great Wall was Liu Yutian.
4. The Great Wall is _______(locate) in the north of China.
5. This tower is __________ building in China and one of
___________ in the world. (tall)
6. Since 1990， about 250000 workers______________(work)
on the Three Gorges Dam.
7. I _____________(learn) about 300 English words by the
end of last year.
8. The workers __________(finish) the dam by 2009.
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