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【多选题】

Water pollutants can be divided into _________. ()

A.
chemical pollutants
B.
biological pollutants
C.
radiological pollutants
D.
physical pollutants
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【判断题】Air pollution is normally defined as the air that contains one or more chemicals in high enough concentrations to harm humans, animals, vegetation or materials.
A.
正确
B.
错误
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【多选题】The biological pollutants include _________. ()
A.
various microorganisms
B.
viruses
C.
worms
D.
algae
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【单选题】Which pair of English phonemes differs in the manner of articulation?______
A.
/d/ and /n/
B.
/k/ and /t/
C.
/s/ and /z/
D.
/t/ and /b/
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【判断题】Air pollution originates from anthropogenic sources.
A.
正确
B.
错误
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【单选题】Which pair of English phonemes differs in the place of articulation? _____
A.
/t/ and /d/
B.
/ʃ/ and /ʒ/
C.
/θ/ and /ð/
D.
/m/ and /n/
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【判断题】The main air pollutants include : particulate matter, Ground-level ozone, Nitrogen dioxide, sulfur dioxide, carbon monoxide and lead.
A.
正确
B.
错误
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【判断题】Natural sourcesof air pollution includesvolcanic eruptions, windblown dust, sea-salt spray and emissions of volatile organic compounds from plants.
A.
正确
B.
错误
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【判断题】A secondaryair pollutant is a chemical added directly to the air that occurs in a harmful concentration.
A.
正确
B.
错误
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【判断题】Air pollution is the leading environmental cause of death worldwide.
A.
正确
B.
错误
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【判断题】Air pollution the fourth highest cause of death among all health risks.
A.
正确
B.
错误
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