题目

II、完形填空（共20小题；每小题1分，满分20分） 阅读下列短文，掌握其大意，然后从文后各题所给的A、B、C、D四个选项中，选出一个最佳答案。 After spending a weekend away with my son, I was so impressed by his generous heart that I sent him this letter. Dear son, I want to thank you for teaching me a very __16__ lesson in life by the great example you __17__. When we were eating at that café in Bondi and a person who had __18__ his hamburger didn’t have enough money to pay for it, without any __19__, you went over and put the __20__ $2 int1．汽车在平直公路上行驶，它受到的阻力大小不变，若发动机的功率保持恒定，汽车在加速行驶的过程中，它的牵引力F将减小．（选填“增大”、“减小”或“不变”）