问题
单项选择题 A1/A2型题
下列胸膜腔的描述，不正确的是（）
A.是壁胸膜和脏胸膜之间的潜在腔隙
B.由壁胸膜和脏胸膜相互移行构成
C.正常时其内可见少量液体呈细带状无回声
D.积液多先积聚在肋膈隐窝
E.正常时即使采用高频探头扫查也难以显示
答案
参考答案：C
解析：胸膜腔是一对完全封闭的浆膜囊，正常状态下，两层胸膜之间相贴甚近，仅含有微量浆液。
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下列胸膜腔的描述，不正确的是（）
A.是壁胸膜和脏胸膜之间的潜在腔隙
B.由壁胸膜和脏胸膜相互移行构成
C.正常时其内可见少量液体呈细带状无回声
D.积液多先积聚在肋膈隐窝
E.正常时即使采用高频探头扫查也难以显示
参考答案：C
解析：胸膜腔是一对完全封闭的浆膜囊，正常状态下，两层胸膜之间相贴甚近，仅含有微量浆液。
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| Believe it or not, there are good reasons for 1 a school uniform. It makes you feel 2 of your school. It builds a common spirit of unity (团结精神) among students and reminds (提醒) them of the values (价值) and history of their 3 . But for most students, school uniforms are not 4 to be proud of at all. The main points students complain about school uniforms are:simple colors, boring designs and 5 quality (质量). What has caused all these problems? A uniform designer pointed 6 that it is because the whole society (社会) doesn't see the 7 of the schoo1 uniform. "Most designers may use the same old fashion, because there are no professionals who work for 8 ," he said. "Besides, high quality calls for (需求) a high price. But in some schools, the annual expense (每年的费用) for each student's uniform is only 50 to 60 yuan. How can we produce (生产) high quality clothes with so 9 money? "Even with these problems, efforts (努力) have been made to 10 the situation. A school uniform competition was held in April in Beijing. Next spring the new samples (样品) will be offered for schools to choose.
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