Because he is the tallest in his class, __________ he sits at the back of the classroom.
A：or
B：but
C：though
D：/
在生产实践中，将动物分为水产动物、家禽、家畜、农业益虫、农业害虫等的依据是动物的（ ）
—Where is Lucy? I can't find her now.
—She ___________ Shanghai on business. She ___________ back in three days.
下列词语中没有错别字的一组是( )
