【题目】Our new English teacher speaks English very fast and I sometimes have difficulty __________ to what he says.
A. counting on B. catching on C. turning on D. taking on
在线课程【答案】
【解析】
试题分析：考查动词短语。句意：我们的新英语老师英语讲得很快，我有时理解他讲的内容有困难。catch on to意为“理解”。count on“依靠，指望”；turn on“打开”；take on“穿上，承担，呈现，雇佣”。故选B项。