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  • 1. (2023高三下·扬州开学考) 阅读下面短文, 从短文后的选项中选出可以填入空白处的最佳选项。选项中有两项为多余选项。

    In theory, modern smartphones can last hundreds of hours on a single charge. 

    Manufacturers love to use laboratory conditions to advertise great numbers, most of which don't match real-world use. Here we have some saving tricks that actually work.

    Delete apps you don't use. On average, smartphone users download about 42 apps but use only ten daily. An easy way to preserve battery life? Deleting an app that you don't use is a simple way to free up storage space on your device and reduce the burden of your battery.

    A phone's single biggest battery drain is the fact that it takes a lot of energy to keep your phone's screen lit up, and we often leave it on accidentally, even if we're not looking at the screen. The solution is to set your device to turn off its screen after 30 seconds or a minute.

    Dim the screen. Viewing your phone's millions of pixels at full brightness is a guaranteed battery drain. Even your phone's auto-brightness feature will sometimes overdo it, meaning you could be losing precious hours of battery life. Try dimming your display a little at a time.

    Go ahead and charge it. You've probably heard the classic advice about charging batteries: Let your battery drain all the way, then charge to 100 percent and repeat. The idea is that you are teaching your battery to "remember" its full charge capacity, rather than confusing it with periodic, inconsistent charges. So instead of running out the door with 50 percent juice, consider plugging in your phone for 15 minutes before you leave.

    A. Get rid of the others.

    B. Decrease display time.

    C. But it's not the case in practice.

    D. Turn off the ones that you don't use.

    E. You'll be surprised how quickly your eyes adjust.

    F. It doesn't consume as much battery power as we think.

    G. Actually most smartphone batteries don't need special treatment.

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