A. To our delight, they quickly adapted themselves to the new working environment.B. Economic benefits must be carefully weighed against the possible dangers of handling the nuclear wastes.C. Individuals who function in terms of this drive do not try to deceive others in regard to a job that they fail to do well.D. We can not only think about our immediate needs. Instead, we should think more about the future. 我们不能只考虑眼前的需要。相反，我们应该多想想未来。