单选题 The whole program is well designed, but some details need further ______ by some experts.

【正确答案】 B
【答案解析】modify更改，修改。句意：整个程序设计得很好，但有些细节需要专家进一步修改。 A. proof校对，检验；B．demonstrate论证，表明；D．polish擦亮，修饰。