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Câu hỏi:
By growing germs in the laboratory, the scientists discovered that ………………… .
- A. there is a complete cure for colds
- B. colds are caused by germs and viruses
- C. there are many different types of viruses that cause colds
- D. there is a way of developing immunity against colds
Lời giải tham khảo:
Đáp án đúng: C
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CÂU HỎI KHÁC
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- Mary searched all over the house ……… she could not find the key.
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- The reason ………… I’m calling was that I didn’t know your address.
- I wish I ……… speak Spanish.
- - I’d like the blue jacket, can I try it on?”
- I can’t believe ……… you. You always let me down.
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- Would you like ……… apple?
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