题目内容
(请给出正确答案)
[主观题]
What is the greatest difference between traveling by air and the other means of traveling?
A.Traveling by air is not so tiring as the others.
B.Traveling by air brings more fun than the others.
C.Traveling by air is much more expensive than the others.
D.Traveling by air offers more time for sleep than the others.
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