题目

第三部分 阅读（共两节，满分40分） 第一节：阅读理解（共15小题，每小题2分，满分30分）        阅读下列短文，从每题所给的A、B、C、D项中，选出最佳选项，并在答题卡上将该项涂黑。 PITTSBURGH, Sept. 7 — At 26, many people haven’t even decided on a career. Luke Ravenstahl, cashing in on his family’s political tradition, is already the mayor of Pittsburgh, the youngest mayor of any major city in the country. Although mayors elsewhere have been younger, Jeff Dunkel was 18 in 2001 when he was elected mayor of Mount Car（2010•通州区一模）在△ABC中，若∠B=120°，AB=1，BC=2，则AC=77．