单项选择题
A．It is a breakthrough in the study of the nerve system. B．It may stimulate scientists to make further studies. C．Its result helps understand babies’ language ability. D．Its findings are quite contrary to previous research.
A．Organize a mass strike. B．Compensate for her loss. C．Try to help her get it back. D．Find her a better paying job.
A．Whether the security checks were really necessary. B．How to cope with the huge crowds of visitors to the municipal building C．Whether the security checks would create long queues at peak hours. D．How to train the newly recruited security guards.