In 1992,the first UN Earth Summit(峰会) was held in Rio de Janeiro. Thousands of people from around the 67 headed for it to talk about the Earth’s tomorrow. Susan,who was twelve years 68 ,and three of her ...
66. looking forward to 期望 67. be built from... 用...建造 68. a wide variety of 多种多样的 69. at advanced levels 在高级范围内 70. carry out 完成,实施 71. according to 根据 72. aim to do 指望做某事 73....