Complete the following statement

Complete the following statements with proper words or expressions according to the course book.Three good general dictionaries are LDCE, CCELD and ( ). 
【正确答案】：CED
【题目解析】：3本常用字典分别是：《朗文当代英语词典》新版（Longman dictionary of contemporary English (LDCE) new edition (1987)）、《科林斯合作英语词典》（Collins COBUILD English language dictionary (CCELD) (1987)）、《汉英词典》修订版（A Chinese-English dictionary (revised edition) (CED) (1995)）