2. 医学
  3. The heart beats about 100,000 times every 24 hours and pushes several quarts of blood through miles of arteries, veins and capil

The heart beats about 100,000 times every 24 hours and pushes several quarts of blood through miles of arteries, veins and capil

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问题 The heart beats about 100,000 times every 24 hours and pushes several quarts of blood through miles of arteries, veins and capillaries. A healthy heart keeps this up for a lifetime without______.
选项 A、cease
B、faltering
C、halt
D、hesitation
答案B
解析 falter不稳，衰退。
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