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问题 多项选择题

病态窦房结综合征的心电图表现有（）

A.出现窦性心律不齐

B.窦性停搏或窦房阻滞

C.心动过缓心率<60／min

D.持续的窦性心动过缓，心率<50／min，且不易用阿托品等药物纠正

E.常出现慢-快综合征

答案

参考答案：B, D, E

填空题

计算机的字长是计算机的主要技术指标之一，它不仅标志着计算机精度，而且也反映计算机______的能力。
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改错题

短文改错:

Mark Twain was born in a small town of Horrid. When he is only twelve years old ,his father died .

Late he became a river boat pilot .Mark Twain was her pen name .During the American Civil War

He worked as a reporter and write a lot of stories. Gradually he made his mark and his work were

popular .He became one of the best known writer of the 19th century in the U.S.A .In his life Mark

Twain wrote the number of stories and novels ,on which "Adventure of Tom Sawyer" is most famous

one .His writings have been translated to many other languages ,and they are deeply love by the readers

all over the world .
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