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Recent scientific studies indicate that eating healthy food and exercising regularly ____ help prevent many diseases.

A. might              B. can              C. shall               D. will      

B.

解析: 考查情态动词辨析。can 意为“会,能,能够”,表示一种能力。例如:Even a small personal computer can store vast amounts of information. might“可能”,表示某事发生可能性很小,而shall和will不能表示能力。 
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