混流泵是利用叶轮旋转时使水产生（）和叶片对水产生推力来工作的。

The holiday is coming to us. Finally, after months of study, you have some time to yourself. So, why not read a book? Well, some people will say, “Why do you like reading books? We have Internet. It offers a lot of more colorful fun. Books are history!” But I am sure you can learn a lot from books than Internet.

One clear reason is that a well-chosen book can give you a lot of wonderful  words, as long as you have a good dictionary, of course. Believe me; it’s far easier to get new words from a book or an article than it is from the TV or the Internet.

But another more important point is that books give you something that the Internet cannot. The general webpage (网页) is picture-heavy and the text is as easy to read as possible. While “easy” may attract (吸引) you, unluckily it’s not helpful for any long-term development of reading skills and the general language level. Because of that, reading on the Internet can’t take the place of reading books.

But perhaps the best reason is that just choosing what you read and doing it independently means that it’s something you do by and for yourself. You can choose what you want to read. It’s hard work, but you’ll find that what once seemed like a duty is now a pleasure.

小题1:Does the writer advise people to read books in their holidays?

小题2:What can people get from a well-chosen book?

小题3:What’s the general webpage like?

小题4:How many reasons for reading a book does the writer mention in the passage?

小题5:What does the writer want to tell us in the passage?

德国哲学家斯普兰格在《人的类型》一书中，把价值观区分为理论的、社会的、经济的、（）。

A.审美的

B.实践的

C.宗教的

D.民族的

E.政治的

处理额窦前壁线性骨折宜采用（）

A.清创缝合、收敛鼻黏膜，保持鼻额管通畅

B.眶上缘切口，骨折固定

C.去除额窦前壁

D.去除额窦腔黏膜、脂肪填充

E.额窦置管

生存分析统计方法的主要特点是

A．只考虑了事件结果

B．只考虑了事件结果所经历的时间

C．既考虑了事件结果，又考虑了事件结果所经历的时间

D．既考虑了事件结果，又考虑了事件结果出现的频数

E．既考虑了事件结果所经历的时间，又考虑了事件结果出现的频数

生产方风险σ和使用方风险β的含义分别是______。

A．好的质量被拒收时生产方所承担的风险，好的质量被拒收时使用方所承担的风险

B．坏的质量被拒收时生产方所承担的风险，好的质量被拒收时使用方所承担的风险

C．坏的质量被拒收时生产方所承担的风险，坏的质量被接收时使用方所承担的风险

D．好的质量被拒收时生产方所承担的风险，坏的质量被接收时使用方所承担的风险