男孩，8岁，左大腿下端肿痛。查体：体温39.5℃，局部皮温高，深压痛，穿刺抽出少量脓性液体，进一步治疗中，下列哪项是最关键的（）
A.联合应用大剂量抗生素
B.患肢制动
C.全身支持疗法，注意水电解质平衡
D.局部减压引流
E.避免外伤骨折
参考答案：D
解析：急性骨髓炎确诊后应该尽快行局部引流，可直接减小骨髓腔或骨膜下的压力，阻断脓液继续向骨内或骨膜下浸润，宁早勿晚，过晚可形成感染的广泛骨髓腔扩散，甚至骨坏死，使治疗更加困难。
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| What's a typical (典型的) day like in Buenos Aires (布宜诺斯艾利斯)? For Diego, who lives with his parents in a house in Buenos Aires, a school day starts 1 . If his mother doesn't wake him up at 6:00 a.m., his dog Luna will. Diego 2 himself quickly and takes Luna for a walk. Then it's time to get ready for school. Diego puts on his school clothes and eats a quick 3 . He slings (抛) his heavy schoolbag over his shoulder and gets onto the city bus for the 25 minutes' 4 to school. Diego is in the seventh year of primary school. Classes start at 8:00 a.m. with math, followed 5 history and music. At 1:00 p.m., Diego and his friends have their lunch. After lunch, Diego heads to English class. This is one of his favorites, 6 the students practise English by writing e-mails to students in 76 countries. When the 8 class ends, Diego and his friends 9 the bus to a city park to play football. Then he's back home to start on homework. If he finishes in time, Diego will cook dinner. His parents come home from work at about 8:00 p.m., and 10 they sit down to dinner. After dinner, Diego does some reading or watches TV before getting ready for bed! | ||||
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