YDS NOUNS/ARTICLES/QUANTIFIERS/PRONOUNS / TEST 5 56. Soru
🏆 Bu Testin Birincisi: missbeliever
Başarı Yüzdeniz : 100 %
56.
- Smog may appear brownish in colour
when it contains high concentrations of
nitrogen dioxide, or it may look bluegrey
when it contains large amounts of
ozone. In ........ case, prolonged exposure
will damage lung tissue.
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