60. According to the passage, swimming with dolphins________.
A. is the world's most popular tourist activity
B. gives fun to both tourists and dolphins
C. will make tourists busy and tired
D. can cause danger to dolphins
61.What does the author think about going to see the Mona Lisa?
A. It is wrong to go and see the mysterious smile.
B. It is not as satisfying as expected.
C. Fifteen seconds in front of the painting is enough.
D. Queuing for hours is worthwhile.
62.The list of "101 things not to do" is made most probably because its author_______.
A. thinks it boring to do the things suggested by other lists
B. believes other lists are not humorous enough
C. intends to persuade people to read more lists
63.What is the main purpose of the passage?
A. To advertise a book
B. To introduce a website
C. To comment on popular lists
D. To recommend tourist activities.