问题
选择题
Bob has learned a lot from his _______ of working in different gyms and is now an expert on all kinds of _______.
A．experience; equipment
B．experience; equipments
C．experiences; equipment
D．experiences; equipments
答案
答案：C
考查名词的单复数。Experience当经验讲时，是不可数名词，无复数；当经历讲时，是可数名词，有复数；根据句意，鲍勃是从在不同体育场馆工作的经历中学到了很多，experience在这有复数形式，排除A,B；equipment设备，装备，为不可数名词，无复数，所以选C。