小勇同学家里某段时间内共有两件用电器在工作，一盏“220V,40W”的灯（灯泡电阻不变），一台“DY-IA（R3）”型的空调机。空调机正常工作时的电压为220V，总功率为880W，内部线圈电阻为3．5Ω．求：
To: suhua@ china.com
From: davidsmith@ britain.com
Subject: School life
Dear Su Hua,
Glad to hear you're graduating from junior high. I'm interested in how you feel about those three years of school life. Would you please tell me the following things?
●What do you like best about your school life?
●What-s the biggest problem as a junior student?
●Who has helped you most? And why?
● Do you enjoy your school life? Why or why not?
I look forward to hcaring from you soon.
All the best,
David
洼意：1)．词数90左右，开头和结尾已经写好，不计入总词数；
2)．回复须包括所有要点，可适当发挥，使全文连贯、通顺；
3)．文中不得提及真实的人名、校名等相关信息。
Dear David，
Thank you so much for your email. I'm very happy to tell you about my school life.
...
How about your school life? Write to me soon.
Best wishes,
Su Hua
“盖有非常之功，必有非常之人。”汉武帝时期出现的“非常之人”与“非常之功”是( )
根据所学知识填空：
