读音选词 根据所给句意和音标，从每题ABCD四个选项中选出一个最佳答案。
There are____  / fɔ: / people in my family.
A. for      B. four    C. from     D. form
What can you see in the____ / leik / ?
A. lake     B. like    C. late     D. left
Most of my classmates ____  / raid / to school every day.
A. red      B. read     C. ride     D. rice
The train came to a____ / ʃɔp / slowly at the station.
A. shop     B. store   C. stop     D. soup
Walk ____ / θru: /the park and you will find a beautiful hotel.
A. though    B. throw    C. throat    D. through

看拼音写词语。

I am playing the piano, but now the school bell is _____.  （  ）

将方程3x（x﹣1）=5（x+2）化为一元二次方程的一般式，正确的是（　　）

如图所示的电路中：

（1）若使L₁、L₂串联，则应闭合____ ，断开____ ；
（2）若使L₁、L₂并联，则应闭合____ ，断开____ ；
（3）同时闭合____ 和____ 是不允许的。