1.A 2.A 3.D 4.B 5.A
1.ACDE 2.ACD 3.ABCD
1.√ 2.√ 3.× VBKdiy3DO8cRFb4IWgkh0b7ATHBNujgg+6Xr6mIDGIpGBuKPScxUjl0Q/e0/Sn2q