Doctors often advise us to pay more attention to our diets and mental health and to take

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A. relevant
(答案→)B. regular
C. adequate
D. accurate
解析：B　考查形容词词义辨析。句意：医生经常建议我们多注意饮食和心理健康，并定期做检查。regular定期的，regular examination定期检查，符合题意。relevant相关的；adequate充足的；accurate精确的。