题目

真核细胞中的miRNA是一类不编码蛋白质的短序列RNA，它能识别靶mRNA并与之发生部分互补结合，从而调控基因的表达。研究发现，BC12是一个抗凋亡基因，其编码的蛋白质有抑制细胞凋亡的作用，该基因的表达受MIR-15a基因控制合成的miRNA调控。下列相关分析错误的是（ ）A.miRNA调控基因表达的方式可能是使靶mRNA降解而抑制翻译过程B.miRNA可能会影响细胞分化的方向，在细胞凋亡、个体发育过程中起重要作用C.细胞内的RNA均由DNA转录而来，只有mRNA携带控制蛋 The greatest source of inspiration for me has always been my father. Though he's been gone for 17 years, his 　 36　 still resonate（产生共鸣）. He taught me how to run my own 　37　 in life. But the most inspiring thing he taught me was to 　38 . One incident is 　 39　 in my mind. It happened when I was a teenager. My sister and I weren’t very fond of a so-called friend of 　 40　 . Dad was a very generous man, and as he'd done with so many people, he'd given this fellow great help. But when he asked for a favor　　 41　 , the guy didn't deliver. Dad’s outlook（人生观）on most things was "Live and let live. " In this case, however, his calmness 　 42　 Terre and me, and we let him know it. "How can you be nice to that man?" we said to him. "You've been so kind to him, 　 43　 he's not being kind back. Why would you want to give him the time of day again?" My father shrugged（耸肩）and said to us, "I do not bend my back with 　 44　 . " I didn't 　45　 it at first, but over the years I came to understand the 　 46　 . Holding a grudge（怨恨）doesn't 　 47　 the person you're angry with, but it changes you. It makes you 　 48　 and gives you more weight to drag around. After my father died in 1991, a（n）　 49　 came from a fellow I'd had a quarrel with years before to 　 50　 his sympathy. He wrote: "I thought I'd tell you how sorry I am 　 51　 the loss of your father. I know he 　 52　 the world to you. I just wanted to let you know that you are in my thoughts. " Much moved, I wrote back. I thanked him for his 　 53　 . And then, because he'd 　 54　 our disagreement, I recalled Dad's 　 55　 words. "I am my father's daughter," I wrote. "And like him, I do not bend my back with yesterday.” 36. A. lectures　 　 B. suggestions　　　　 C. lessons　 　　　　　D. pictures 37. A. engine　 　 　 B. race　 　　　 C. route　 　 　 D. car 38. A. forgive　 　 　 B. persuade　 　　　 C. forget　 　 　 D. excuse 39. A. vital　 　　　 B. obvious　 　　　　 C. visual　 　 　 D. vivid 40. A. sister’s　 　 　 B. mine　 　　　　　　 C. father's　 　 D. mother’s 41. A. in return　 　 B. in turn　 　　　　　　 C. by return 　　 D. by turn 42. A. relaxed 　　 　 B. moved　 　　　　 C. interrupted　 D. bothered 43. A. and　 　　　 B. nevertheless　 　 C. still　 　　 　　 D. so 44. A. anger　 　　 　 B. disappointment　 C. worry　 　　　D. yesterday 45. A. make　 　　 　 B. get　 　　　　 　　 C. work　 　　　 D. hear 46. A. reason　 　 　 B. word　 　　　　　　 C. philosophy　 　 　 D. sentence 47. A. change　 　 　 B. hurt　 　　　 　　C. upset　 　 　　 D. disturb 48. A. stronger　 　　 B. weaker　 　　 C. rougher　 　 　　D. heavier 49. A. news　 　　　　　 B. letter　 　　 　　　 C. message　 　　D. information 50. A. explain　 　　　　　 B. express 　 　　　C. produce　 　 　　D. present 51. A. in　　　 　　　　　 B. with 　　　 　　　　　　C. about　 　　　　D. at 52. A. showed　 　　　　 B. represented　 　　C. equaled　 　　　　D. meant 53. A. kindness　 　　 B. sympathy　 　　 　　 C. understanding　　 D. consideration 54. A. referred　 　　　　 B. mentioned　 　 　　 C. reminded　 　 　　D. retold 55. A. well-known　 　 B. instructive　 　　C. inspiring　 　　 　　D. forgiving