单项选择题

A tunnel would be ______.

A．less expensive to be built than a bridge
B．more expensive to be built than a bridge
C．less expensive to be built than a rail
D．more expensive to be built than a rail
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单项选择题
The writer seems to imply that Europeans travel mostly for the reason that
A．they want to see historic remains or religious spots.
B．they are interested in different cultural traditions and social customs.
C．they would like to take pictures in front of famous sites.
D．they wish to escape from the cold, dark and rainy clays back at hom
单项选择题
In paragraph 2, cities like London, Copenhagen, and Amsterdam are mentioned
A．to show that they are not good cities in terms of geography and climate.
B．to tell us how wealthy their residents are.
C．to suggest that these cities lack places of historic interest and scenic beauty.
D．to prove that they have got more tourism than they an handl
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