A:was leaving
B:leave
C:had left
D:has left
在探究电流跟电阻的关系时,测量一组电流、电阻值后,改变R.阻值,闭合开关,在读出并记录第二组电流、电阻值前,应先进行的操作是____ 。
The fact that some cannot see the real person inside my body doesn't make me ____(烦恼;不悦)
一Pauline has lost her phone.
一No.It's in her bag.I hear it