题干

如图所示为某传感装置内部部分电路图,RT为正温度系数热敏电阻,其特性为随着温度的升高阻值增大;R1为光敏电阻,其特性为随着光照强度的增强阻值减小;R2和R3均为定值电阻,电源电动势为E,内阻为r,V为理想电压表.若发现电压表示数增大,可能的原因是(   )

①热敏电阻温度降低,其他条件不变

②热敏电阻温度升高,其他条件不变

③光照减弱,其他条件不变

④光照增强,其他条件不变.

A:①③

B:①④

C:②③

D:②④

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A

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    I was always blamed for watching too much cartoons. As I have said goodbye to my teenage, I shift to watching more movies to prove that I was a grown-up. Surprisingly, I found that movies have something in common with cartoons. They are unrealistic.

    Sometimes movies give people hope, including the hope of justice, the hope of tomorrow and almost everything else. A great number of people were once touched by certain movies. From time to time, movies try to deliver some decisive ideas to the audience. In this way, movies do cheer up many people to go on with their lives.

    It seems that there is a set formula in movies. We usually see the hero or heroine in the movies suffer a lot in the opening. Gradually and likely, the destination of them always comes to a turning point. So they have to struggle or make some important choices. Then the movie ends up with a happy finale. Or at least the hero finally manages to face his poor life with great courage somehow. However, when audience watch movies in the cinema, most of them just follow the story. Few of them may ask, “Will it happen in the real life?”

    Movies are also imitating the real life. Thus a movie, just like a novel, can never be the same as the real life. The setting of a movie is so ideal that we could hardly find it out in reality. The moviemakers just try their best to persuade the audience to believe the story is true. In a word, it is all just make-believe.

    For quite a long time, I think that the adults' world is realistic in the opposite way of the children's cartoon. However, the movies from the adult world turn out to be a made-up thing. At the very moment, I suddenly realize that movies are somewhat of the adult's fairy tales or cartoons.

    To sum up, other than false comfort such as movies and tales, we are more in need of the maturity of mind, so that we can face our lives bravely and correctly.