患者女，72岁，因“白细胞增高4个月”来诊。患者于4个月前查体，发现白细胞18×109/L，后多次复查白细胞异常，无乏力、盗汗，无发热。查体：皮肤、巩膜无黄染，皮肤未见出血点及淤斑，浅表淋巴结不大，腹平软，肝、脾未及。血常规：白细胞20×109/L，血红蛋白125g/L，血小板160×109/L，分类淋巴细胞0.81。骨髓涂片分类：增生活跃，淋巴细胞0.55，以成熟小淋巴细胞为主，染色质凝集，未见核仁，幼稚淋巴细胞0.02。染色体核型：46，xx［20］。
患者目前最佳的治疗方案为（）
A.苯丁酸氮芥
B.氟达拉滨
C.苯达莫司汀
D.观察随访
E.环磷酰胺+长春新碱+泼尼松（COP方案）
参考答案：D
阅读下面短文，掌握大意。然后从A.B.C.D四个选项中选出最佳选项 I was waiting for the bus when I met the woman. “You look 26 . Come and sit here,” she said. “ 27 are you going?” “I don’t know. I just want to catch a 28 and see what it will be like at the end.” “I’m afraid you’ll see 29 there. Why don’t you enjoy the sights on the way?” “How can I do that while my heart’s 30 ?” I asked sadly. My best friend had left me. The woman seemed to understand my feeling. “Don’t cry, little girl. I’ve had a similar experience to you. Thirty-five 31 ago, my husband left our three children and me. I was deadly sad. I decided to kill myself and the children, so I took 32 to the sea. 33 ，they seemed to know what would happen, so they 34 loudly. Their cry suddenly woke me 35 . How could I 36 my hope to live for one of life’s problems? After that, I worked hard to raise the children. Now they all live 37 and one of them has his own family. Then the woman gave me a 38 , “We should never wait for the door to 39 before us. We should find the key to the 40 or try to find another way” The bus came and I got on it with a smile
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