单项选择题

It is unlikely that enough qualified teachers will be found unless there is ______ improvement in salaries and conditions of housing.

A．innumerable
B．subtle
C．extensive
D．substantial
<上一题 目录 下一题>
热门 试题

单项选择题
They aim to ______ the maximum economic benefit from the Olympic Games.
A．contract
B．distract
C．extract
D．subtract
单项选择题
It is hoped that the prisoner will be released through the ______ of the president himself.
A．intrusion
B．interruption
C．intervention
D．interference
相关试题