For beginners and elementary and lower-intermediate learners, （

For beginners and elementary and lower-intermediate learners, （ ）dictionary is essential.
A、monolingual
B、bilingual
C、specialized
D、encyclopedic
【正确答案】：B
【题目解析】：本题考查双语词典的适用群体。对于初学者、中低级以下的学习者来说，双语词典是必不可少的，因为他们对目标语言的了解不够，无法完全理解单语词典。所以本题选B。