1. เฉลยวิชาสังคม '51
1.3 2.4 3.4 4.2 5.1 6.3 7.2 8.4 9.4 10.4
11.4 12.2 13.1 14.3 15.2 16.4 17.3 18.1 19.3 20.2
21.2 22.3 23.3 24.3 25.2 26.2 27.4 28.4 29.4 30.3
31.4 32.1,2 33.1 34.1 35.4 36.4 37.2 38.4 39.2 40.1
41.4 42.4 43.1 44.3 45.3 46.2 47.2 48.4 49.2 50.1
51.3 52.4 53.4 54.4 55.4 56.3 57.2 58.2 59.1 60.2
61.2 62.1 63.4 64.2 65.1 66.3 67.4 68.4 69.4 70.1
71.4 72.4 73.2 74.1 75.2 76.1 77.1 78.4 79.4 80.1