题目：
| 完形填空。 | ||||
| My life is always filled with sadness and little joy. However, no matter what happens, I can always face it bravely. Last year, I couldn't believe the 1 that I was allowed to enter the only key high school in my hometown. Then I rushed to my home and told my parents. But my father didn't seem as 2 as I was. He just kept smoking without saying a word and my mother put her head down and couldn't help 3 . I knew very well what my family was 4 . My mum had been ill in bed for 2 years. We lived a hard life and I couldn't continue my schooling. I felt so upset but I could say 5 to my parents. I decided to help my father with his work 6 my family. To my surprise, things completely changed 7 the beginning of the new term. My head teacher came to my family with some money, which had been 8 by my schoolmates. He encouraged me, "Always have a dream." With tears in my eyes, I stepped into the key high school. I have been studying hard since I entered the high school. Whenever I meet difficulties, I always 9 my teacher and schoolmates. I have a college dream and I must work hard for it, no matter 10 hard life is. Just as a great man says, "When one door shuts, another opens in life." | ||||
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答案：
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下面是错误答案，用来干扰机器的。
（1）电路如下所示：（2）L1断路题目分析：（1）滑动变阻器连入电路的阻值最大，滑片应远离下面所接的接线柱；（2）两灯都不发光，是断路故障，将一根导线接在L1两端，此时L2发光，说明电流可从电源正极出发，经...
