問題詳情

C. Many people were surprised that former U.S. presidentClinton needed to undergo emergency heart surgery inSeptember. After all, didn’t he have the best medical carepossible, including frequent testing and all the right drugs?Of course he did, but you cannot test yourself to 21 . Norwill medications cure all your illnesses, especially if 22irregularly.You see, when arteries are injured by 23 riskfactors like high blood pressure or cigarettes, cholesterol is24 like new plaster repairing a wall. But if too much ofthe wrong cholesterol 25 , the plaque grows and becomesinflamed. Blood can clot on this 26 surface andrapidly close off an artery in just minutes, even if the plaquewas small initially.A stress test can determine whether enough blood ispassing by a blockage to 27 an exercising heart on theday of the test. If the artery is 50 per cent closed, the testwill often be clean, giving 28 comfort to people whoare still at 29 for heart attacks. Many people wronglybelieve that these tests 30 health. Like many, Clintontolerated atypical symptoms of life-threatening blockagesbefore the correct diagnosis was finally made.
21.
(A) safety
(B) save
(C) survive
(D) live

參考答案

答案：A
難度：非常困難0
統計：A(0),B(0),C(1),D(0),E(0)

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