问题
选择题
In his speech the headmaster __________ to the great help the school received from the district government.
A．expressed
B．pointed
C．explained
D．referred
答案
答案：D
express表示,表达；point指出；explain解释；refer to提到。句意:校长在讲话中提到了区政府给学校的很大帮助。