These facts suggest that, at a minimum, proper airing of newly purchased goods with an obvious chemical smell is a wise warning. Home and office windows should be opened during good weather. Even one’s car needs to be ventilated as well while in the garage.
We need further research to understand better other potential health dangers, too. For example, the effects of overcrowding of schools (carbon dioxide build-up ), the factory work environment ( an endless list of potentially dangerous substances ), and even home heating and cooling (the air conditioner may be our enemies, not our friends) have only recently started to come to light. Until we understand the effects of our new technological environment better, we can only hope that“there is no place like home.”
64.What is the main idea of the first paragraph?
A.The air we breathe in is harmful.
B.The water in everyday use is unsafe.
C.Chemicals are added to the drinking water.
D.Chemicals are released in the running water.
65.In Paragraph 2, the underlined sentence means that
.
A.bathing should be done with caution
B.homes and offices should be aired often
C.any pollution should be taken into consideration
D.we should prevent any pollution from doing harm to us
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