It is reported that Beijing and Zhangjiakou（张家口）will pete to host the 2022 Winter Olympics, which will China’s social development.
A. interest
B. benefit
C. gain
D. contain
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A. interest
(答案→)B. benefit
C. gain
D. contain
解析：考查动词。A. interest使感兴趣；B. benefit有益于；C. gain获得；D. contain包含。句意：据报道，北京和张家口将争取举办2022年冬奥会，这将对中国的社会发展有益。故B正确。