题目

关于电场强度有下列说法，正确的是（） A . 电场中某点的电场强度在数值上等于单位电荷在该点所受的电场力 B . 电场强度的方向总是跟电场力的方向一致 C . 在点电荷Q附近的任意一点，如果没有把试探电荷q放进去，则这一点的电场强度为零 D . 根据公式E= ．可知，电场强度跟电场力成正比，跟放入电场中的电荷的电量成反比Every year on my birthday, from the time I turned 12,a white gardenia（栀子花）was sent to my house. No card came with it．Calls to the flower shops were not helpful at all. After a while I stopped trying to discover the sender's name and was just very pleased with the beautiful white flower in soft pink paper.But I never stopped imagining who the giver might be, Some of my happiest moments were spent daydreaming about the sender. My mother encouraged this imagining. She'd ask me if there was someone for whom I had done a special kindness. Perhaps it was the old man who I looked after when he was ill. As a girl, I had more fun imagining that it might be a boy.One month before my graduation, my father died. I felt very sad and didn't want to go to the coming graduation dance at all. And I didn't care whether I had a new dress or not. But my mother, in her own sadness, would not let me miss any of those things. She wanted her children to feel loved and lovable. In truth, my mother wanted her children to see themselves much like the gardenia-lovely, strong and perfect with perhaps a bit of mystery.My mother died ten days after I was married. I was 22. That was the year the gardenia stopped coming.【1】Which statement is true according to the passage?A. The author found the sender by calling the flower shops. B. In fact, the flower was sent by a boy.C. It was