问题
选择题
一个生态系统无论大小，其组成都包括 ( )
A．生产者、消费者和分解者
B．动物和植物
C．所有生物
D．生物部分和非生物部分
答案
答案：D
题目分析：生态系统包括生物部分和非生物部分，A只是生物部分，错误；B只包括了生产者和消费者，还缺少分解者和非生物部分，错误；C只包括了生物部分，还缺少非生物部分，错误；D包含了两个组成部分，正确，选D
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一个生态系统无论大小，其组成都包括 ( )
A．生产者、消费者和分解者
B．动物和植物
C．所有生物
D．生物部分和非生物部分
答案：D
题目分析：生态系统包括生物部分和非生物部分，A只是生物部分，错误；B只包括了生产者和消费者，还缺少分解者和非生物部分，错误；C只包括了生物部分，还缺少非生物部分，错误；D包含了两个组成部分，正确，选D
I’m a straight-A student and have been my whole life. When you come from a family of educators, it just seems . With high academic standards and a competitive , I don’t just like losing and I also can’t it. I need to beat the students, perfectly in everything. I’ve even gone so far as to define myself by my , saying how outstanding I am. If I don’t get the grade I then I am lost. Today I was sitting in class trying to the last minutes studying for a test in which I had to get full marks. the girl behind me started talking to me, I tried to listen while still glancing at my study sheet . When I thought the conversation required it, I smiled, nodded and . And then I found myself wishing she would be so I could study. After a while, she said, “You know, you’re a really good . You’re so easy to talk to. ”I froze. I replayed the praise in my head before smiling and accepting it . But inside, I knew it wasn’t true. She’d made every effort to have a conversation and I wasn’t even trying to . I passed the test excellently despite my of lost study time, but the one thing I needed to learn most wasn’t on that test. I had being the best student so that I had failed at just being normal. So what to me most? What I have is all about my personal and about me being too self-centered. There can only be so many scholars, but there is enough sympathy. I want that to be what matters to me—sympathy.
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