单项选择题
A．A problem caused by the construction B．An accident that occurred on the bridge C．The building project they are working on D．The public transportaion conditions
A．It will place an unnecessary burden on society. B．It will give them no motivation to work hard. C．It will exert psychological pressure on them. D．It will affect their future spending power.
A．They are an obstacle to a company’s development. B．They lack the creativity of the younger generation. C．They cannot work as efficiently as they used to. D．They prevent young people from getting ahead.