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问题 单项选择题

在工程施工中，要特别注意噪声不得超过国家标准的限值，对于打桩工作，夜间（）。

A．噪声限值为45dB

B．噪声限值为50dB

C．噪声限值为55dB

D．禁止施工

答案

参考答案：D

单项选择题

急性心肌梗死患者，心力衰竭加重，同时胸骨左缘3、4肋间新出现三级收缩期杂音，提示（）.

A.并发室间隔穿孔

B.并发 * * 肌功能不全

C.并发心包炎

D.并发心室游离壁穿孔

E.并发感染性心内膜炎
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单项选择题

Everybody dreams. Some people think dreams can tell us about the future. Other people think dreams can tell us about ourselves. It’s like our (11) is talking to us.
Why are dreams (12) strange and hard to understand Some people think our brain uses (13) to talk to us. When we fly, swim, or fall down in our dreams, it has a (14) meaning. Lots of doctors help people (15) their dreams. They find that dreams tell us about our (16) and fears.
These days, many scientists (17) that dreams are very important. During the day, we have many (18) , and our brain receives a lot of information. When we dream, our brain (19) information that is not important, and puts the most important information into our (20) . As we learn more about the brain, we may find answers to our questions about dreams.

Ⅰ. 完形填空

/Close
阅读下列短文，从每小题所给的A、B、C、D四个选项中选出一个最佳选项。

A．feelings

B．stories

C．lives

D．memories
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