准备移栽的茄子幼苗和黄瓜幼苗，根部总是带有一个土团．这是为什么？

D

    Night after night，she came to help me sleep，even long after my childhood years．

    I don't remember when it first started making me a little angry-my mom's hands pushing my hair that way．But it really made me uncomfortable，for they felt rough against my young skin．Finally, one night，I shouted at her．"Don't do that anymore．Your hands are too rough!" She didn't say anything, but she never did it again．

    Years later, I missed my mother's hands and her goodnight kiss on my face. I was not a little girl anymore. My mom was in her mid—seventies, and her rough hands were still doing things for my family and me．   

    Now my own children have grown up．It was late on Thanksgiving Eve．As I slept in my bedroom，a familiar hand ran across my face to push the hair from my head. Then a kiss，ever so softly, touched my forehead．

    Taking my mom's hand，I told her how sorry I was for that night I shouted at her．But my mom didn't know what I was talking about．She had forgotten it for long．

    That night，I fell asleep with a new appreciation for my mother's caring hands. And the guilt that I had carried around for so long was nowhere to be found．

下列关于减数分裂的叙述，正确的是（    ）

①减数分裂包括两次连续的细胞分裂         ②在次级卵母细胞中存在同源染色体

③着丝点在第一次分裂后期一分为二         ④减数分裂的结果，染色体数减半，DNA数不变

⑤同源染色体的分离，导致染色体数目减半    ⑥联会后染色体复制，形成四分体

⑦染色体数目减半发生在第二次分裂的末期．

—Yes, Miss Li.