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Listening Quiz: Sử Dụng DNA Môi Trường Để Quan Trắc Loài – Medium Level
Th7 17, 2025
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà môi trường (English for Environmentalist)
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1.
What is the conversation mainly about?
A lesson on how to collect water and soil samples for chemistry
A discussion of how environmental DNA can be used to monitor species
A debate about whether traditional surveys should be banned
A conversation about why experts are no longer needed in science
Explanation:
Emma explains environmental DNA and how it is used to find animals and monitor species. The conversation focuses on its process, benefits, and limits.
2.
What does Emma say they collect in order to test for species?
Air and sunlight samples
Animal tracks and feathers
Water or soil samples
Leaves and rocks
Explanation:
Emma says, ‘We collect water or soil samples.’
3.
According to Emma, why is this method useful compared with traditional surveys?
It is faster and less harmful
It replaces the need for all experts
It only works in forests
It is cheaper and always perfect
Explanation:
Emma says the method is ‘faster and less harmful’ than traditional surveys.
4.
What can be inferred about environmental DNA from the conversation?
It is only helpful when animals are seen directly
It works only in laboratory experiments
It can always identify every species with complete certainty
It is useful, but the results may need expert review
Explanation:
Emma says environmental DNA helps but does not replace experts, and she notes that DNA can sometimes be old or mixed, so the results need careful interpretation.
5.
Why does Emma mention that DNA can sometimes be old or mixed?
To suggest that water samples should be avoided
To explain that traditional surveys are faster
To show that the method has limits and must be interpreted carefully
To prove that the samples are always unreliable
Explanation:
Emma brings up old or mixed DNA to explain a limitation of the method and why careful interpretation is needed.
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