问题
单项选择题
关于动脉粥样硬化的描述，哪项是正确的（）
A.主动脉脂纹仅见于中年以上人群
B.粥瘤内泡沫细胞均来自单核细胞
C.脂纹以主动脉前壁多见
D.氧化低密度脂蛋白（ox-IDL）具有细胞毒性
E.粥瘤内胶原由成纤维细胞产生
答案
参考答案：D
搜题请搜索小程序“爱下问搜题”
关于动脉粥样硬化的描述，哪项是正确的（）
A.主动脉脂纹仅见于中年以上人群
B.粥瘤内泡沫细胞均来自单核细胞
C.脂纹以主动脉前壁多见
D.氧化低密度脂蛋白（ox-IDL）具有细胞毒性
E.粥瘤内胶原由成纤维细胞产生
参考答案：D
完形填空 (共15小题；每小题2分，满分30分) 阅读下面短文，掌握其大意，然后从下列各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。 "I am going to have a dance performance tonight." Mary ran towards me with a rare bright smile on  her face, saying, “I hope you'll come. ” She left 31 , disappearing in the throngs of people quickly.I could hardly believe my ears, for Mary was a quite ordinary girl. I had never seen her 32 or wearing attractive clothes, moreover, she always wore her big black-frame glasses. I arrived at the hall with the ticket, and found my seat. Her performance was the seventh one. I knew I would suffer from a hard time before her 33 , for I had no 34 of art, but her performance was worth 35 , no matter how long I would wait for. Time went slowly, I 36 not to fall asleep. Finally it came Mary’s turn. I opened my eyes as large as possible, 37 to lose anything. Wearing a golden and shining skirt, Mary appeared on the glorious stage. Her dress wen  t well with the brilliant lights. I could feel all the audience in the hall 38 their eyes on her and it was also 39 for me to remove my sights from her. 40  with a charming smile, she looked like a pretty butt erfly flying on the splendid 41 . After all the performances ended, I waited for her at the gate."Hi!" She stood in front of me with a bag and her crystal high-heeled shoes in her hands, and dressed as she used to be, but the making-up still could be seen. I expressed  42 to her. "I knew it would be wonderful." She could not hide her 43 , laughing like a child. Her crystal shoes were shinning in the wonderful 44 night. Suddenly I 45 that every girl has a pair of special shoes like the crystal shoes of Cinderella.
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