1 . Perhaps the best example is shown by UNESCO, ________________ (这个组织运作一个阻止……的项目，两个定语从句) world cultural heritage sites around the world from disappearing. (根据汉语提示完成句子)

2 . 这个在农场上拍摄的节目给观众们留下了深刻的印象。(impression) (汉译英)

3 . The value of life lies not only in the final success, but also in the ________ of achieving it.

A．process

B．project

C．program

D．position