男，10岁，发热一周，并有咽喉痛，最近两天皮肤有皮疹。体检：颈部及腹股沟浅表淋巴结肿大，肝肋下1cm，脾肋下1cm。入院时血常规结果为：血红蛋白122g／L：白细胞115×10／L，白细胞分类：中性成熟粒细胞20％、淋巴细胞75％、嗜酸性粒细胞1％、单核细胞4％，原始细胞未见，血小板数189×10／L
首先考虑下列哪种疾病
A．恶性淋巴瘤
B．急性淋巴细胞白血病
C．慢性淋巴细胞白血病
D．传染性单核细胞增多症
E．上呼吸道感染
参考答案：D
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| The world 1 many interesting sounds. Some are unpleasant to our ears while 2 are very pleasant to hear. In a single day you probably hear 3 sounds. All sounds are different. Some 4 loud, some sounds are high, others are low, some sounds are useful. 5 sound we can not talk or listen to each other. The ringing of the alarm clock wakes people up; the hooting of a car warns people of danger. Some sounds are harmful. When planes fly low 6 the land. The very loud sounds can damage the house. Very loud sound can even make people deaf. We know sound travels about one kilometer in three 7 . In a thunder storm you see the lighting first and then hear the thunder. This is because light travels_8_ than sound. Next time you see lightning, count the number of seconds before you hear the thunder. Divide this number 9 3. This will tell you 10 kilometers away the thunder storm is.
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