以下提示重症肺炎的诊断的是（）
A.血压80/50mmHg
B.心率90次/分
C.头痛，烦躁不安
D.畏寒，高热
E.呼吸频率26次/分
参考答案：A
解析：重症肺炎的诊断主要标准：需要机械通气，48小时内肺部浸润≥50%，感染性休克或需要血管活性物质>4小时，急性肾衰竭。次要标准：呼吸频率≥30次/分，氧合指数≤250，双侧或多叶段炎症，收缩压<90mmHg，舒张压<60mmHg。
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| One day Mrs Jones went 1 . When her 2 came home in the evening, she began to tell him about a beautiful cotton 3 . "I saw it in a shop this morning." She said. "And…" "And you were going to buy it." said Mr Jones. "How 4 is it?" "Fifty pounds." "Fifty pounds for a dress? That's too 5 ." But every evening when Mr Jones came back from his work, his wife began to speak only about the dress. And at last after a week, he said, "OK, buy the dress. Here is the 6 ." She was very 7 . But the next evening, when Mr Jones came home and asked, "Have you got the beautiful cotton dress?" She answered, "No!" "Why not?" he asked. "Well, it was 8 on the window of the shop for a week. So I think 9 wants this dress. So I don't want it, 10 ." | ||||
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