单选题：what does the author imply in the last paragraph?

题目分类：英语四级
题目类型：单选题
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题目内容：

what does the author imply in the last paragraph? A．Sleeplessness does harm to people's health.
B．Few people really know the importance of sleep.
C．It is important to study our sleep patterns.
D．Average people probably sleep less than the rich.

参考答案：

答案解析：

知识点：洋地黄的应用女，30岁，活动后心悸气短2年，1周前受凉后出现咳嗽咳白痰。有风湿性心脏病二尖瓣狭窄史，查体：高枕

知识点：洋地黄的应用女，30岁，活动后心悸气短2年，1周前受凉后出现咳嗽咳白痰。有风湿性心脏病二尖瓣狭窄史，查体：高枕卧位．BP90／60mmHg，双肺底可

分类：英语四级题型：单选题

知识点：肺动脉栓塞男，70岁。1天前因股骨颈骨折住院，今日突发呼吸困难，大汗，既往体健。查体："136．5℃，BP90

知识点：肺动脉栓塞男，70岁。1天前因股骨颈骨折住院，今日突发呼吸困难，大汗，既往体健。查体："136．5℃，BP90／60mmHg，无颈静脉怒张。双肺呼吸

分类：英语四级题型：单选题

How are business transactions done in big modern stores?

How are business transactions done in big modern stores? A．Individually. B．Elec

分类：英语四级题型：单选题

In the mid-20th century, most families ate dinner at home in

In the mid-20th century, most families ate dinner at home instead of eating out

分类：英语四级题型：单选题

知识点：肝硬化肝硬化食管静脉曲张破裂大出血后，可能出现的表现不包括

知识点：肝硬化肝硬化食管静脉曲张破裂大出血后，可能出现的表现不包括 A．血尿素氮增高 B．脾脏缩小 C．腹水减少 D．意识障碍 E．少尿

分类：英语四级题型：单选题