4．Michael has had a bad cold and a sore throat for three days．This morning，he had a high fever and a running nose，so his mother took him to the doctor．Here are the directions of the medicine that Dr．Wang has prescribed（开处方） for Michael．
DOSAGE（剂量）：Adults and children 12years of age and older take 2spoonfuls of this medical liquid every 6hours．Do not take more than twelve spoonfuls in 24hours．Children 6years old to 12years old take half of the adult dosage，not more than 6spoonfuls per day．Do not use this product in children under 6years of age．This will provide overdose and could cause serious health problem．
WARNING：Do not take the medicine any more than the suggested dosage unless directed by a doctor．Keep the medicine away from the reach of children under six years old．Patients with high blood pressure，heart disease or stomach trouble are forbidden to take this medicine．This medicine may cause sleepiness．Do not drive or operate any machine while taking this medicine．Chronic cough，which usually lasts a long time，is dangerous and harmful．If your cough continues for three days，discontinue use and ask your doctor for advice．
21．Who should take the medicine prescribed？C
A．Someone with high blood pressure or heart disease．
B．A patient who is suffering from stomach trouble．
C．A teenager who has a fever and a sore throat．
D．A patient who has a chronic cough for a week．
22．How much dosage should an eleven-year-old child take？B
A．Two spoonfuls per day．B．Four spoonfuls per day．
C．Eight spoonfuls per day．D．Ten spoonfuls per day．
23．Under what condition should the patient stop taking this medicine？A
A．The patient's cough lasts for more than three days．
B．The patient is highly stressed．
C．The patient has a running nose for more than 24hours．
D．The patient is bleeding．
分析 本文属于说明文阅读，作者通过这篇文章主要向我们描述了米迦勒生病后去医院开药方后一张药方的说明，介绍了这种药的功能和服用条件，注意事项等．
解答 21．C．细节理解题．根据文章第一段Michael has had a bad cold and a sore throat for three days．This morning，he had a high fever and a running nose，so his mother took him to the doctor"可知发烧和喉咙痛的人需要开药；故选C．
22．B 细节理解题．根据文章第二段"children 6 years old to 12 years old take half the adult dosage，not more than 6 spoonfuls per day"可知一个十一岁的孩子应该服用八勺剂量；故选B．
23．A．细节理解题．根据文章最后一段"if your cough continues for three days，discontinue use and ask your doctor for advice"可知病人在高度紧张情况下停止服用这种药；故选B．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
