题目内容
有机磷农药中毒的机制是
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Directions: Your foreign friend Clare has just graduated from Beifang University in China and plans to go back to the United States soon. Write her a letter congratulating her graduation and expressing your best wishes to her. Write your letter with no less than 100 words. Write it neatly on ANSWER SHEET 2. Do not sign your own name at the end of the letter; use "Li Ming" instead. You do not need to write the address. ( 10 points)
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