12. How much do you know about the development of medical (技術)？
新課標階梯閱讀訓練系列答案科目：初中英語 來源： 題型：
( ) 1. Chinese by more and more people from all over the world today.
A. learn B. learned
C. is learned D. was learned
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4. My brother joined the army two years ago.
My brother________ _____ in the army for two years.
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