Article 4 (b)

17 ,( D)

Article 25 (d)

Article 27 (b)

Article 29 (c)

3 1, (1)

Article 32 (b)

Article 33 (a)

37 、( D)

46. ABC

48 、( BCD)

49 years old (automatic call distributor)

50 years old

Others are not 100% sure.