【单选题】Don't you think it essential that every resident of Nanjing _____ spare no effort to make contributions to Nanjing 2014 Youth Olympic Games? [ ]
【单选题】男婴,3个月,3周前曾患肺炎。新生儿期接种的疫苗应是
【单选题】Generally, students inner motivationwithhighexpectations from others__________essential to their development.
【简答题】Which one is not essential to be a good reviewer?