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问题 单项选择题

脊髓灰质炎减毒活疫苗接种剂次为（）

A.1次

B.2次

C.3次

D.4次

E.5次

答案

参考答案：D

解析：儿童接种脊髓灰质炎疫苗的时间是生后2、3、4个月各一次，4周岁一次，共4次。

选择题

They lost their way in the forest, and _____. Which of the following is wrong? [ ]

A. what made matters worse was that night began to fall

B. what was worse, it was getting dark

C. to make matters worse that night was falling

D. worse still, night had fallen

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单项选择题

女，7岁，持续发热2周，体温39℃～40℃，伴腹泻每日3～5次。体检：神萎，心率72次／分，肝右肋下3cm，脾肋下2cm，血常规检查：WBC3．O×109/L，中性粒细胞60%，淋巴细胞40%，嗜酸粒细胞0，ALT200U/L，血清抗-HBs阳性。该病例最可能的诊断是（）。

A.急性乙型肝炎

B.伤寒

C.钩端螺旋体病

D.急性血吸虫病

E.急性细菌性痢疾
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