患者，男，1岁。反复发热、咳嗽半年，抗生素治疗效果差。实验室检查：细胞因子和细胞因子受体缺失，痰培养为真菌生长。应高度怀疑为（）
A.原发性B细胞免疫缺陷病
B.原发性T细胞免疫缺陷病
C.继发性B细胞免疫缺陷病
D.继发性T细胞免疫缺陷病
E.补体免疫缺陷病
参考答案：B
解析：原发性免疫缺陷病常由于遗传因素或先天免疫系统发育不良所致；小儿多见，年龄越小，病情越重；治疗效果差。T细胞免疫缺陷的主要免疫学特点是T细胞数量减少或功能缺陷，表现为细胞因子和细胞因子受体缺失，临床表现为以病毒、真菌及原虫引起的反复感染。
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| Life is not easy, so I'd like to say "When anything happens, believe in yourself." When I was a young boy, I was 1 shy to talk to anyone. My classmates often 2 me. I was sad but could do nothing. Later, 3 happened, and it changed my life. It was an English speech contest. My mother asked me to 4 it. What a terrible idea! It meant I had to speak before all the teachers and students of my school. "Come on, boy. Believe in yourself. You are sure to 5 the contest." Then mother and I talked about many different topics. At last I chose the topic "Believe in yourself." I tried my best to remember all the speech and practiced it over 100 6 . With my mother's great love, I did 7 in the contest. I could hardly believe my ears when the news came that I had won the first place, I heard the cheers 8 the teachers and the students. Those classmates 9 once looked down on (看不起) me, now all said "Congratulations!" to me. My mother hugged me and cried excitedly. Since then, everything has changed for me. When I do anything, I try to tell 10 to be sure and I will find myself. This is not only for a person but also for a country. | ||||
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