题目

      Most people only tap (发掘) a small part of their potential. You do what you CAN do, but are you doing what you COULD do? Most people do what they CAN do, but not what they COULD do. But there is a whole other world of possibilities out there that most of us don’t even let ourselves think about them.       The larger question we need to ask ourselves is: Can we reach a greater potential than we have ever imagined? In fact, if you stop and think about it, what could you do? I mean if you weren’t afraid of failing, or if you decided to stop coming up with reasons f如图,在电场中,一个负电荷从C点分别沿直线移到A点和B点,在这两个过程中,均需克服电场力做功,且做功的值相同,可能满足这种做功情况的电场是A.沿y正方向的匀强电场B.沿x正方向的匀强电场C.可能是处于第I象限某位置的正点电荷形成的电场D.可能是处于第Ⅳ象限某位置的负点电荷形成的电场
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