Similarly，only by means of examinations________the level of their students.
A．teachers can understand
B．teachers understand
C．can teachers understand
D．teachers do understand
Similarly，only by means of examinations________the level of their students.
A．teachers can understand
B．teachers understand
C．can teachers understand
D．teachers do understand
C
此题考查倒装句。句意是：同样地，唯有通过考试老师才能了解他们学生的水平。Only＋状语在句首，句子的谓语要倒装。