[单项选择]患儿，4岁，10天前出现感冒发热伴声音嘶哑，经肌注抗生素治疗，症状稍缓解，2天前，体温再次上升，无声嘶，但出现右侧颌下肿大疼痛。检查：右侧颌下淋巴结肿大、压痛，质地中等偏硬，肿胀范围约2cm×3cm，周界不清，患儿体温40度，白细胞总数13．2×10⁹／L，分类中心粒90％ 。该疾病应与下列哪一疾病相鉴别 （）
A. 淋巴结结核
B. 右领下淋巴结肿瘤
C. 右颌下淋巴结炎
D. 右颊间隙感染
E. 川崎病

It is hard to predict how science is going to turn out, and if it is really good science it is impossible to predict. If the things to be found are actually new, they are by definition unknown in advance. You cannot make choices in this matter. (61) You either have science or you don’t, and if you have it you are obliged to accept the surprising and disturbing pieces of information, along with the neat and promptly useful bits.
The only solid piece of scientific truth about which I feel totally confident is that we are profoundly ignorant about nature. Indeed, I regard this as the major discovery of the past hundred years of biology. It is, in its way, an illuminating piece of news. (62) It would have amazed the brightest minds of the 18th century Enlightenment to be told by any of us how little we know and how bewildering the way ahead seems. (63) It is this sudden confrontation with the depth and scope of ignorance that represents the most signifi