单项选择题What is the main problem that puzzles the readers of the novel
单项选择题According to the writer which of the following is put of chivalry A knight should ______.
填空题increased
单项选择题In the author’ s opinion, the debate at Harvard ______.
单项选择题Annan was pleased with Dr. Lee’ s approach of rying to get the AIDS medication to ______.