一、1、longer
2、shorter
3、hotter
4、wider
5、higher
6、bigger
7、busier
8、bluer
9、taller
10、redder
11、happier
12、better
13、older/elder
14、cleaner
15、earlier
16、nicer
17、newer
18、thinner
19、easier
20、larger
二、1、longer
2、bigger , busier
3、heavier
4、hotter
5、faster
三、1、older
2、hometown
3、population
4、busy
5、meters
四、1、on the coast
2、newer ,than
3、In fact , in the 1980s
4、will , as busy as
5、taller , many other .
五、1、Is Los Angeles busier than Shanghai?
No.it isn't.
2、Is New York smaller than Cambridge?
No ,it isn't.
3、Is Hong Kong bigger than London?
No , it isn't.
4、Is Changjiang shorter than River Thames?
No , it isn't.
5、Is Shenzhen younger than Hong Kong?
Yes , it is.