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问题 选择题

I don't know how_______commas.    [ ]

A. use    

B.  to use    

C.  used    

D.  using

答案

答案：B

单项选择题

尿毒症患者发生贫血的主要原因

A．水钠潴留
B．促红细胞生成素减少
C．活性维生素D3减少
D．出血倾向
E．含氮代谢产物潴留
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填空题
短文填词
     Some years ago, SARS broke out in the mainland of China.
The situation was so s_______ that there was no time to debate 1. _______
who is to b______. The most important thing was to find out the2. _______
cause of this _______ (致命的) disease. The government invited 3. _______
all the most famous ______(专家) in this field to discuss and quite 4. _______
a few suggestions were ______ forward. Some of them picked out 5. _______
those suggestions and tested them to see _____ they were helpful. 6. _______
Doctor Zhong Nanshan _______(选择) one patient who was badly 7. _______
ill and had the new medicine tested on him. _____ his great joy,8. _______
the patient recovered! He rushed to his office ______ telephoned to 9. _______
the top official, t_____ him this exciting news10. _______
                                                                                       .          
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