题干

细胞膜具有一定的流动性,下列实例中能反映该特点的是(   )
①变形虫伸出伪足              ②小肠绒毛上皮细胞对钾离子的吸收
③核糖体合成蛋白质进入细胞核  ④红细胞吸收葡萄糖
⑤吞噬细胞吞噬病菌            ⑥内质网形成囊泡与高尔基体膜融合

A:①②④

B:①⑤⑥

C:②③④

D:①②④⑤⑥

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D

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    When I found out I was moving to India, it was beyond a nightmare. It was something I couldn't even imagine. The impression I had of India were only based upon a few summer visits to my grandparents, filled with heat, pollution and dirt. Even though I was only six years old, I know this would be a complete change from my comfortable life in Maryland.

    During my first six months in India, my expectations were met almost exactly. I hated my new apartment; I missed my school and friends back in Maryland, and I was sick of all the dirty marketplaces that filled the streets of New Delhi.

    After those six months were over I finally realized that I was going to be in India for a while. I knew that I had to start making the most of my new life. It was then that I became completely involved in my school. My school, the American Embassy School, was filled with international students: Europeans, Australians, Chinese, and Americans just like me. But they all welcomed me with open arms. It was amazing to be among such diverse students, who had such incredible experiences to share.

    Now, when I look back at my time in India, all I can think about is how fortunate I am to have had such a wonderful experience. My move to India not only allowed me to see a completely different side of the world, but I was also able to establish unbreakable bonds with so many interesting and amazing people. Even now, after quite some years, I am still in contact with my closest friends from the American Embassy School. I cannot even imagine what I would be like without having lived in India. I would have missed out on meeting so many extraordinary people, and I would be a completely different person today.