GRE Text Completion: Maggoosh-GRE填空Maggoosh - 25V9OL3CS4P74NI7Y

An increase in blood pressure, by itself, does not indicate that a person is at greater risk for a myocardial infarction; there must be ____________ of symptoms before a doctor comes to such a conclusion. A. a superfluity B. a cluster C. an outbreak D. a paucity E. a remission