问题
单项选择题
休克的实质为（）
A.血压下降
B.中心静脉压下降
C.脉压下降
D.心脏指数下降
E.组织灌注量不足及细胞缺氧
答案
参考答案：E
解析：休克的实质是由于急性组织灌注量不足，由此而引起微循环障碍、组织缺氧的临床综合征。
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休克的实质为（）
A.血压下降
B.中心静脉压下降
C.脉压下降
D.心脏指数下降
E.组织灌注量不足及细胞缺氧
参考答案：E
解析：休克的实质是由于急性组织灌注量不足，由此而引起微循环障碍、组织缺氧的临床综合征。
When people talk about air pollution, they are usually thinking about outdoor air 1 . But do you know that there is 2 air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have 3 to do with polluted indoor air. A lot of pollution comes from indoor activities 4 smoking and cooking. As most people 5 about 80-90% of their time inside buildings, it is important to take indoor air pollution seriously, too. Air pollution influences our health 6 . When the air is polluted, not only young children and old people suffer from it, 7 people with health problems suffer as well. Indoor air pollution can 8 people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also lead to lung cancer（肺癌）and heart disease! In the great London fog in 1952, 4,000 people died in a few days 9 the pollution! 10 is said that half a million young children and women die each year in India because of indoor air pollution!
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