单项选择题

Some linguists believe that the ______ age for children learning a foreign language is 5 to 8.

A．optimistic
B．optional
C．optimal
D．oppressed
<上一题 目录 下一题>
热门 试题

单项选择题
Business in this area has been ______ because prices are too high.
A．prosperous
B．secretive
C．slack
D．shrill
单项选择题
He added a ______ to his letter by saying that he would arrive before 8 pm.
A．presidency
B．prestige
C．postscript
D．preliminary
相关试题