（1）Which of the following big cities isn't mentioned？
A.New York.
B.Tokyo.
C.London.
（2）What can you do in big cities？
A.Go to different kinds of museums.
B.Buy things from all over the world.
C.Both A and B.
（3）Is it cheap to live in big cities？
A.Yes，it is.
B.No，it isn't
C.Not mentioned.
（4）Finding a job in big cities is_______.
A.always easy
B.always difficult
C.sometimes difficult
（5）The passage thinks it is right for people_______.

A.to move to big cities
B.not to move to big cities
C.to do it before thinking over