1.A 2.A 3.D 4.B 5.A
1.ACDE 2.ACD 3.ABCD
1.√ 2.√ 3.× ct/LJCpc/lRlERMK4AOpw7g6lW9adMAB1/elSA5k1PfLwTqfHbENbVoQpfqWkx89