Đáp án: A
Giải thích: cụm từ “cause of st”: nguyên nhân dẫn đến cái gì
Dịch: Bạn có biết nguyên nhân gây ô nhiễm là gì không?
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Choose the letter A, B, C or D to complete the sentences
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A. of
B. in
C. on
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A. affects
B. effects
C. pollutes
D. poisons
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A. quality
B. discovery
C. benefit
D. engine
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__________ pollution is the increase of temperature caused by human activity.
A. visual
B. water
C. thermal
D. radioactive
Choose the letter A, B, C or D to complete the sentences
__________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.
A. light
B. visual
C. soil
D. noise
Choose the letter A, B, C or D to complete the sentences
__________ pollution is harmful or annoying level of noise, as from vehicles, industry activities, etc.
A. light
B. visual
C. soil
D. noise
Choose the letter A, B, C or D to complete the sentences
Do you know how many festivals __________ in Vietnam?
A. are there
B. there are
C. is there
D. there is
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What is the __________ of the smallest ethnic group?
A. ancestor
B. group
C. majority
D. population
Choose the letter A, B, C or D to complete the sentences
What is the __________ of the smallest ethnic group?
A. ancestor
B. group
C. majority
D. population