Cho các chất sau:1, Nước.2, Muối khoáng.3, Chất hữu cơ.4, Vitamin.Mạch gỗ vận chuyển những chất gì cho cây?A.1,2.B.1,2,3.C.1.D.1,2,3,4.
Phần bị nhuộm màu khi cắt ngang cành hoa là phần nào?A.Vỏ.B.Ruột.C.Trụ giữa.D.Biểu bì.
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.crashB.brotherC.brainstormD.brown
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.troubleB.trafficC.crazyD.tree
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.divideB.splitC.hitD.family
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.breakfastB.ice-creamC.createD.crane
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.matterB.trafficC.attitudeD.hard
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.pearB.earnC.learnD.heard
Choose the word whose underlined part differs from the other three in pronunciation in the following question.A.trashB.treatC.criticalD.tradition
Chu vi của tam giác đều tỉ lệ thuận với cạnh của nó theo hệ số tỉ lệ là:A.2B. $ \dfrac{1}{2}. $ C. $ \dfrac{1}{3}. $ D.3
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