C. Many people were surprised that former U.S. president
Clinton needed to undergo emergency heart surgery in
September. After all, didn’t he have the best medical care
possible, including frequent testing and all the right drugs?
Of course he did, but you cannot test yourself to 21 . Nor
will medications cure all your illnesses, especially if 22
irregularly.
You see, when arteries are injured by 23 risk
factors like high blood pressure or cigarettes, cholesterol is
24 like new plaster repairing a wall. But if too much of
the wrong cholesterol 25 , the plaque grows and becomes
inflamed. Blood can clot on this 26 surface and
rapidly close off an artery in just minutes, even if the plaque
was small initially.
A stress test can determine whether enough blood is
passing by a blockage to 27 an exercising heart on the
day of the test. If the artery is 50 per cent closed, the test
will often be clean, giving 28 comfort to people who
are still at 29 for heart attacks. Many people wrongly
believe that these tests 30 health. Like many, Clinton
tolerated atypical symptoms of life-threatening blockages
before the correct diagnosis was finally made.
【題組】21. (A) safety (B) save (C) survive (D) live
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