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Listening Quiz: Giải Thích Nhóm Đối Chứng – Easy Level
Th10 8, 2025
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Nhà sinh học (English for Biologist)
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1.
What is the conversation mainly about?
The purpose and role of a control group
How to give a medical treatment
How to design a science fair project
Why experiments always fail
Explanation:
Jessica explains what a control group is, what it does, and why it is important in an experiment.
2.
According to Jessica, what does a control group help scientists do?
Choose the best treatment
Increase the number of subjects
Change the experiment’s outcome
Compare results
Explanation:
Jessica says a control group helps compare results.
3.
What does the control group receive in the experiment?
A stronger treatment
An extra test
The same treatment as everyone else
No treatment
Explanation:
Jessica says the control group does not get the treatment and is given no treatment.
4.
Why does Jessica say results can be unclear without a control group?
Because the treatment always works
Because the subjects are all the same age
Because the experiment takes too long
Because there is nothing to compare the treatment against
Explanation:
Jessica explains that the control group shows what happens without the treatment, which lets researchers compare results.
5.
How do the speakers say the control group is chosen?
By selecting the oldest subjects only
By selecting similar subjects and giving them no treatment
By giving everyone the same treatment
By choosing subjects who already know the result
Explanation:
Jessica says they pick similar subjects but give them no treatment.
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