问题补充:
---Really?Whowillgive______lecture?Whatisitabout?---ProfessorChen,______PresidentofPekingUniversity,aboutpollution.A.the; aB.a; theC.the; 不填D.a; 不填
答案:
C解析由Really?(真的吗?)可判断上一句可能是:I hear that there will be a lecture. 因此第一空应填the。President of Peking University在句中用作同位语,故前面不用冠词。