单项选择题

女性，25岁。易饥，多食，心悸，多汗伴大便次数增多3月，体重下降7kg。查体：皮肤湿润，甲状腺二度肿大。心率120次/分，心律不整，早搏3～4次。双手震颤（＋）。实验室检查：血T3，T4增高，TSH下降，肝功能和血常规均正常。
给予患者甲巯咪唑10mg，每日2次治疗。2周后门诊复查：近3天来感咽痛，T38.2℃、咽部稍充血，查肝功能正常。外周血WBC 2.1×109/L。中性粒细胞0.8×109/L。考虑患者粒细胞下降最可能的原因（ ）。

A.疾病本身导致粒细胞减少
B.急性病毒感染
C.甲巯咪唑引起粒细胞减少
D.假性粒细胞减少
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女性，45岁，2个月来无诱因出现双上肢关节疼痛伴晨僵，每于早晨起床后两手指关节僵硬，持续约一个多小时后逐渐缓解，未诊治，三天来加重来诊，诊后饮食好，大小便正常，既往体健，查体：双侧前臂伸面对称部位各触及两个皮下结节，直径约5mm，活动，质硬，无压痛，心肺腹查体未见异常，双上肢近端指间关节，掌指关节和腕关节肿胀，有压痛，下肢不肿。该患者最可能的诊断是（ ）。
A.类风湿关节炎
B.风湿热
C.强直性脊柱炎
D.系统性红斑狼疮
单项选择题
Most teenagers in the United States try to make time for school , family and friends． But some choose bigger goals． Here are the stories of two American teens working to make a difference in the world．At age 15，Winter Vinecki has already had more successes than most people have in their lifetime． I recently completed a marathon(马拉松)on all seven continents and became the youngest person in the world to do so． And ，l was really doing this for my dad．”Doctors discovered Winter's father had prostate cancer(前列腺癌)when she was nine years old．Her father died 10 months later．“When he was first found ill l immediately knew l had to do something to help him．That 's when l formed Team Winter for prostate cancer research． ”Through 'Team Winter , Winter Vinecki has raised almost 500 ,000 dollars． She has taken prostate cancer education worldwide from Africa to Asia through foot races called marathons , on seven continents．The other teen is Jack Andraka．He invented an inexpensive tool that can help find lung cancer， when he was 15 at the time． Without the Internet，I would have never been able to learn all these materials I needed for this project． ”Jack is now 17 and seeking patents(专利) for his latest inventions． He has developed low-cost water quality machines． They help take away heavy metals and chemicals from water．Why did Winter run marathons around the world
A.Tobringprostatecancereducationtootherpeople
B.Todoprostatecancerresearch
C.Totakeprostatecancerlessons
D.Toraisemoneyforprostatecancerpatients
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