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câu 1A 2A 3B 4C 5A 6D 7A 8B 9D10A 11A 12D 13B 14A 15D 16B 17D 18A 19D20C 21B 22D 23B 24D 25C 26B 27A 28A 29A30D 31B 32B 33D 34A 35B 36A 37B 38A 39D40D 41A 42C 43C 44D 45A 46B 47C 48B 49D50D 51D 52C 53D 54A 55D 56A 57B 58A 59C60B 61D 62D 63C 64D 65C 66C 67B 68A 69C70D 71D 72D 73A 74D 75B 76B 77D 78C 79D80C 81B 82D 83C 84A 85D 86D 87C 88C 89D90B 91A 92A 93B 94A 95D 96A 97A 98D 99B100C 101C 102D 103A 104B 105C 106B 107A 108C 109A110D 111D 112C 113D 114D 115C 116A 117D 118A 119C120D 121B 122C 123C 124B 125B 126C 127D