成人的细胞数目约有2×10¹⁴个，200多种，人体的每一种细胞（　　）

材料一：“一带一路”国际合作高峰论坛于2017年5月l4日至15日在北京举行“一带一路”是中国首倡，但不是中国一家的“独奏曲”，而是各国共同参与的“交响乐”，是各国共同受益的重要国际公共产品。它抓住互联互通这个关键环节，聚焦经济合作特别是基础设施建设，契合沿线国家和本地区发展的需要，把中国发展同相关国家发展紧密结合，把合自发展战略和合作规划有机对接，扩大地区投资和内需，增加就业，减少贫困，从而带动提升地区整体发展水平。

材料二：我国改革开放以来，经济快速发展，综合实力与国际地位快速提升，的确值得国人骄傲。但在中国快速发展的同时，却出现一种敌视中国的论调，说中国的发展是对世界资源的掠夺以及环境的破坏，更有甚者说中国的发展将会威胁到世界的和平。西方极少数国家极力宣扬“中国威胁论”，目的是要挑拨中国与周边国家以及亚洲其他国家之间的关系，为中国的发展制造麻烦，从而达到其搞霸权主义、强权政治的目的。

完形填空

阅读下面短文，从下列各题所给的A、B、C三个选项中，选出可以填入空白处的最佳答案。

My mother’s loving hands

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

      I don't remember1it first started making me a little angry 一 my mom's hands pushing my hair that way. But it really made me uncomfortable, for they2rough（粗糙的）against my young skin. Finally, one night, I 3 her, "Don't do that any more. Your hands are too rough!" She didn't say anything,4 she never did it again.

      Years later I missed my mother's5and her goodnight kiss on my face. I'm not a little girl any more. My mom is6 her mid-seventies, and her rough hands are still doing things for my family and me.

      Now my own children have7. It was late on Thanksgiving Eve. As I slept in my bedroom, a familiar hand ran across my8to push the hair from my head. Then a kiss, ever so softly, touched my brow（额头).

      Taking my mom's hand, I told her how9 I was for that night I shouted at her. But my mom didn't know what I was talking about. She had forgotten it long ago.

      That night, I10with a new appreciation（感激）for my mother's caring hands. And the guilt（内疚）that I had carried around for so long was nowhere to be found.