The Expo site should be from anywhere in the city of Shanghai within 90 minutes by bus

问题补充：

The Expo site should be from anywhere in the city of Shanghai within 90 minutes by bus, subways and special taxis.

A. adoptable

B. acceptable

C. available

D. accessible

答案：

A. adoptable

B. acceptable

C. available

(答案→)D. accessible

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