9分达人阅读第52套P1-Cutty Sark: the fastest sailing ship of all time

9分达人听力第24套

9分达人阅读第49套P3-Artificial artist?

9分达人阅读第57套P2-Driverless cars

9分达人阅读第61套P2-The Step Pyramid of Djoser

9分达人阅读第62套P1-The White Horse of Uffington

9分达人阅读第62套P2-I contain multitudes

9分达人阅读第55套P2-Saving bugs to find new drugs

9分达人阅读第59套P2-The Desolenator: producing clean water

9分达人阅读第60套P3-Environmental practices of big businesses