Part II Reading Comprehension （15 minutes）
2、Who probably built the first permanent shelters?


3、Where do the Eskimos live in winter?


4、What' s the main function of steep thatched roofs?


5、Why did the cliff dwellers of the American Southwest build their homes so high up?


6、What disaster struck London In 1666?


7、What urgent problem do some city-dwellers still have to face now?


8、The first man-made shelters could be easily _____________

9、The Norsemen built homes with _____________ and filled the space with clay.

10、The house built by Nomads of Central Asia is round because _____________
Reading Comprehension （Reading in Depth） （25 minutes）
47、

Questions57-67are based on the following passage.



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