如图所示，匀强电场方向沿x轴的正方向，场强为E．在A（l，0）点有一个质量为m，电荷量为q 的粒子，以沿 y 轴负方向的初速度v₀开始运动，经过一段时间到达B（0，-l）点，（不计重力作用）．求：

（1）粒子的初速度v₀的大小．

（2）当粒子到达B点时，电场力对粒子做功的瞬时功率．

---Hey! Here is a message on my cell phone, telling me to send money to the bank account…

--Delete it! It's a trick. Many a person ________ by such tricks.

A．were cheated

B．have been cheated

C．has been cheated

D．was cheated