[单选题]根据《方法与参数（第三版）》，对项目进行项目评价时，方案比选是项目评价的重要内容，建设项目的投资决策以及项目可行性研究的过程是 的过程。
A. 方案比选和择优
B. 方案比选和投资决策
C. 项目评价和择优
D. 项目评价和投资决策

Americans today believe that acceptable social behavior follows effortlessly from personal virtue. The (1) between morals and manners has become blurred. (2) you need is a good heart, most people assume, and the (3) will take care of itself. You don’t have to write thank-you notes.
Many Americans believe that natural behavior is beautiful. The "natural" (4) to human relations presumes that to know any person well enough is to love him, that the (5) human problem is a communication problem. This (6) that people might be separated by basically, generally irreconcilable differences--philosophical, political, or religious--and assumes that all such differences are (7) misunderstandings.
Indeed, it has never been easier to insult people inadvertently. A gentleman opens a door for a lady because his mother taught him that ladies (8) such courtesies, but she (9) and spits in his eye because he
A. superficially
B. profoundly
C. commonly
D. individually