它以明确的规则、相互的承诺为各国的经济交往搭建了一个共同的平台,被誉为“经济领域的联合国”。该组织是[ ]
A.欧洲联盟
B.北美自由贸易区
C.世界贸易组织
D.亚太经合组织
答案:C
Mary three of her classmates invited to the party. [ ]
A. as well; has been
B. and; have
C. as well as;was
D. as good as; were
简述沉默型应对办法。