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问题 单项选择题

干性坐骨神经痛与根性坐骨神经痛的区别点为（）

A.干性坐骨神经痛一般无腰椎脊突及横突压痛，压颈静脉及颏胸试验阴性

B.干性坐骨神经痛多有腰椎脊突及横突压痛，压颈静脉及颏胸试验阴性

C.干性坐骨神经痛多无腰椎脊突及横突压痛，压颈静脉试验阴性，颏胸试验阳性

D.干性坐骨神经痛多有腰椎脊突及横突压痛，压颈静脉阴性，颏胸试验阳性

E.干性坐骨神经痛多无腰椎脊突及横突压痛，压颈静脉及颏胸试验阳性

答案

参考答案：A

阅读理解

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阅读短文，根据所读内容在文后1 ~10的空格里填上适当的单词或短语。注意：每空不超过3个单词。

     Good morning, everybody. My topic for today is "How Americans Value Time".

     Americans from childhood think a great deal about time and they learn to value time very much. As

children, they are taught.that time is everything.

     Time is money. A working American has to work hard for 8 hours a day or 40 hours a week. This is the

working time. In his spare time, he also works hard for more money. Even Saturday and Sunday are filled with

activities. In the street you can hardly see a man who walks slowly. They walk very fast. In fact, they are

running.

     Time is knowledge. No matter whether they go to work or go back home, they will take advantage of every minute to read on the buses, trains and ships.

     Time is friendship. When an American is invited to dinner, he won't be late or get there too early. Otherwise, his arrival will make the others unhappy.

     Seeing from above, we should learn from Americans to value every minute very much.

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填空题

在骨组织中，（）细胞是骨组织的干细胞；（）细胞具有分泌骨质有机成分的功能；（）细胞具有很强的重吸收骨基质的能力。
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