The author mentions big cities such as Tokyo, Singapore and Paris______.A. to show that city people all over the world have a lot in commonB. to let his readers be aware that they are some of the world's biggest citiesC. to illustrate their difference from American citiesD. because they are some of the cities that attract visitors most
The author mentions big cities such as Tokyo, Singapore and Paris______.
A. to show that city people all over the world have a lot in common
B. to let his readers be aware that they are some of the world's biggest cities
C. to illustrate their difference from American cities
D. because they are some of the cities that attract visitors most
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