题干

关于下列动物的形态结构与其生活环境、生活习性相适应的叙述错误的是(   )

A:蝗虫的体表有外骨骼,适于陆地生活

B:家兔有发达的盲肠,有助于消化植物纤维

C:家鸽体内有发达的气囊,适于进行气体交换

D:河蚌的外套膜能分泌形成贝壳,起保护作用

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答案(点此获取答案解析)

C

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    I was living a life in my screen and hardly noticed what was around me. So when my friends invited me to go camping for a long weekend without the cell service, I thought this was exactly what I needed. Here's how keeping away from my phone for 48 hours changed me.

    I realized my bedtime routine was usually centered on one thing: my phone. Right before I went to sleep, I browsed through news websites and checked my emails. When I woke up in the middle of the night, I did the same thing. The problem with this was I felt anxious every night. I felt free without my phone at that weekend camp. I felt asleep listening to the sound of crickets.

    When I had my phone, I was always checking the time and thinking of future plans. My thought was: “Who's going to text me now? What will I do next?” Without my phone, I truly savored what I was doing in the moment, sitting by the river, riding a bike, or singing the old songs. There was no need to rush through any of it. I listened to what my body wanted instead of what my phone was telling me to do.

    You know that moment when you're hanging out with a group of people and no one has anything to say? The typical response: Everyone immediately pulls out their phones. So what did we do without a phone to avoid embarrassing silences? We actually talked to each other. Instead of burying our faces in our screens, we looked one another in the eye, had a moment of pure human connection and then continued talking. And you know what? People actually listened.

    So, now what? Now I'm back to the real world.