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2 năm trước
Cho bộ NST 2n = 4. Viết các giao tử (tinh trùng) có thể có. Giải thích.
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V. Choose the best answer. I arrived at the airport with plenty of time to check in. It was a trip I had done many times before and (1) _____ to the clerk at the desk, there was no problems and the (2) _____ was schedule to leave on time. I was flying to Helsinki but I had to (3) _____ planes in Rome. Suddenly there was a(n) (4) _____ saying that, because of a strike by air- traffic controllers, the plan would be (5)_____ by at least two hours. I headed in the (6) ______ of the restaurant. After a tiring of about six hours, tired and frustrated, we eventually (7) _____ the plane. When we (8) _____ in Rome, it was almost midnight, and there was no sign of any connection to Helsinki. 1. A. referring B. relating C. according D. conforming 2. A. trip B. travel C. flight D. journey 3. A. alter B. change C. transfer D. exchange 4. A. notice B. broadcast C. advertisement D. announcement 5. A. delayed B. stopped C. checked D. postponed 6. A. way B. path C. route D. direction 7. A. took B. boarded C. joined D. caught 8. A. arrived B. went C. got D. cam HỨA VOTE 5 SAO

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