单项选择题

Students or teachers can participate in excursions to lovely beaches around the island at regular ______.

A．gaps
B．rate
C．length
D．intervals
<上一题 目录 下一题>
热门 试题

单项选择题
Criticism and self-criticism is necessary ______ it helps us to find and correct our mistakes.
A．by that
B．at that
C．on that
D．in that
单项选择题
Our shop has entered into a ______ with a clothing firm to buy 100 coats a week.
A．contract
B．contrast
C．conflict
D．contact
相关试题