A clean environment can help the city bid for the Olympics, which will promote its econom

A clean environment can help the city bid for the Olympics, which will promote its economic development.
A. in turn
B. in fact
C. in return
D. in nature

(答案→)A. in turnB. in factC. in returnD. in nature解析：句意为：一个干净的环境能帮助那个城市申办奥运会，这个反过来会促进它的经济发展。 in turn 解释为“依次，轮流，反过来”；by turns 解释为“轮流，交替，一阵，一阵”；in return 解释为“作为报答”；in fact 解释为“事实上”。这里的in turn 解释为“反过来”。选A。

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