Inwesterncountries,eggsareusuallysoldby　　　dozen,whilea...

问题详情：

 In western countries, eggs are usually sold by　　　dozen, while apples are usually sold by　　　weight.

A. 不填; the                                             B. the; 不填

C. the; the                                                       D. 不填; 不填

【回答】

B

知识点：冠词

题型：选择题