This is thef irst time in our---that we have come to BeijingA life B live C lives D lifes
问题描述：
This is thef irst time in our---that we have come to Beijing
A life B live C lives D lifes
答
答案是A.当life作“生活”讲时,是不可数名词；当“生命”讲时,是可数名词.
这句话的意思是：这是我们一生中第一次到北京来.