— What _________ the number of the students in your school?
— About two thousand. A number of them __________ from the countryside.
A:is; are
B:is; is
C:are; is
D:are; are
“西气东输”工程不经过的区域是( )
我国古代有过“以吏为师”的时代,官吏同时兼任教师。汉代之后,凡是熟悉儒家经典的人都可以设教兴学,充任教师;中世纪西方,也是由牧师这类神职人员充当教师。这说明( )