(单选题)
The effect of smog doesn’t include______.
A.the rising of PM2. 5 readings
B.the increase of people’s income
C.more people suffering diseases
D.patients increased in hospital
参考答案：B
参考解析：
细节理解题。根据第一段第三句“The rising PM 2.5 readings terrified many people, and some health experts said that whenever the smog gets serious, hospitals receive more patients suffering acute respiratory（呼吸系统）and heart diseases”可知，雾霾导致PM2.5上升，患病的人数增加，A项、C项、D项正确；雾霾不会使人们的收入增加，B项错误。故选B。
知识点：
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