问题
不定项选择
如图所示，用两节干电池点亮几个小灯泡，当逐一闭合开关，接入灯泡增多时，以下说法不正确的是
A．灯少时各灯较亮，灯多时各灯较暗
B．各灯两端电压在灯多时较低
C．通过电池的电流在灯多时较大
D．开关闭合越多，外电路电阻越大
答案
答案：D
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如图所示，用两节干电池点亮几个小灯泡，当逐一闭合开关，接入灯泡增多时，以下说法不正确的是
A．灯少时各灯较亮，灯多时各灯较暗
B．各灯两端电压在灯多时较低
C．通过电池的电流在灯多时较大
D．开关闭合越多，外电路电阻越大
答案：D
On a cold winter day, I waited in line to see my hero, Jack Canfield, the author of The Success Principles, who was going to deliver a speech on his new book. During his talk, Jack 41 his wallet, pulled out a hundred-dollar bill, and said, ‘‘Who wants this?” 42 shot up in the audience; people leaned forward to see whom Jack would 43 . But I jumped up, ran up the 44 to the stage, and grabbed the bill. As I was launching myself in the air, 45 raced through my mind — was I about to be humiliated(羞辱) in front of 800 people? Would they 46 security guards and take me from the stage? 47 my desire for bold （大胆的）action was louder than any 48 voice. As I got the bill from his hand, he said, “That’s it! We can’t wait for the 49 to come to us. We must take 50 to create what we want!’’ After his talk, I 51 to formally meet Jack and boldly asked for his personal e-mail address. Over the next months, I sent him emails 52 my points of view and dreams with him. He kindly e-mailed back lots of encouragement. But my life got busy 53 other things. I stopped e-mailing Jack. A year later, my dreams had worn away. I thought Jack would inspire me into action, like a giant arrow that would show me the way. I e-mailed him, and then again — but got no 54 . As I sat down at my computer to 55 my e-mails, I 56 woke up. What was I doing? I was waiting! Now I remembered the crowd, most likely 57 that hundred-dollar bill, while they sat glued to their chairs. Usually we all have a “Jack” for whom we wait — whether it’s a person, a place or a thing. We 58 believe the gifts of life are just around the corner, and that everything will come in a(n) 59 way. So we don’t try. We 60 . But as Wayne Gretzky said，“You’ll always miss 100% of the opportunities you don’t take!” So I stopped waiting and started my writing career. Now what are you waiting for?
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