问题
单项选择题
He ______ a well-meant but unsuccessful campaign to ease East-West tensions calling for arms reduction and a summit of the nuclear powers.
A．embarked on
B．reckoned on
C．caught on
D．dwelt on
答案
参考答案：A
解析：embark on a campaign“发动了一场运动”；reckon on“依靠；指望”；catch on“理解，明白”；dwell on“详述”。