2020年军队职称英语-卫生类C级词汇指导：常见词汇选项（3）

       7. All living organisms, regardless of their unique identity, have certain biological, chemical, and physical characteristics in common.

　　A) as a result of

　　B) considering

　　C) on purpose

　　D) whatever
 

　　8. The most pressing problem any economic system faces is how to use its scarce resources.

　　A) puzzling

　　B) difficult

　　C)terrifying

　　D) urgent

　　9. The Klondike was the scene of one of the biggest gold rushes the world has ever known.

　　A) location

　　B)view

　　C) event

　　D) landscape
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