This is a group with many gifts. I'm sure one of your gifts is the gift of a smart and capable brain. I'm confident that's the case because admission is competitive and if there weren't some signs that you're clever， the dean of admission wouldn't have let you in.

发展经济学最终是为了改善人们的生活。

热切而强烈的渴望，是一切有效努力的泉源。

成功是最好的报复。

一家采矿公司的真正价值在于其平衡利润与环境管理的能力。