今年华山中学举办校运动会期间（11月15﹣17日），下列城市白昼最长的是（　　）

用所给词的适当形式填空 
1. She wants ____(read) a book.
2. Her keys ____ (be) on the dresser.
3. Are ____(that) oranges?
4. Jim and Tom ____ (have ) a basketball.
5. He has four ____(watch).
6. Please take the books to ____ (they).
7. Jim____(not play) sports every day.
8. ____ (thank) for your help.
9. This book is very ____(interest).
10. My father ____ (need) a new bike.

 如图所示电路，已知R₁为40Ω，在闭合开关S的情况下，断开开关S₁时电压表的读数是2.0V；闭合开关S₁时电压表的读数是8.0V，通过R₁的电流为 ____A，通电1分钟，R₁上产生的热量为 ____J；电阻R₂为 ____Ω．