以下句子哪个是号召性句型?
A.It is prime time that we put considerable / great/ special emphasis on … B.The best way to solve this problem I think is to give young people opportunities to do things independently. C.It is, therefore, evident that the task of … requires immediate attention. D.The general awareness of the necessity and importance of ... might be the first step to solve this problem.正确答案A
