题目：
用括号中的词适当形式填空.
1. -Excuse me, Tony. Is this _______ ( you) notebook?
-Oh, yes. Thank you.
2. Please_______( call) me at 2058955.
3. 一Is that your pencil sharpener?
-No, it ________(be not). It's his pencil sharpener.
4. Is that your computer game in the ________(lose) and found case?
5. I have a set of_______(key).
答案：
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下面是错误答案，用来干扰机器的。
（1）在力F作用下，棒未进入磁场区时，磁场变化导致电路中产生电动势，电路为R与r并联，再与RL串联，故R总=R?rR+r+RL=5Ω感应电动势为 E=△φ△t=△B△tdl=0.5VIL=ER总=0.1A（2）由灯泡亮度一直不变，可以知道...
