题目

第三部分：阅读（共两节，满分50分） 第一节：阅读下面短文，从每题所给的A、B、C、D四个选项中，选出最佳选项，并把答案写在答题卷上。（共20小题，每小题2分，满分40分） Early in the 16th century men were trying to reach Asia by traveling west from Europe. In order to find Asia they had to find a way past South America. The man who finally found the way from the Atlantic Ocean to the Pacific was Ferdinand Magellan (麦哲伦). Magellan sailed from Seville in August, 1519 with five ships and about 280 men. Fourteen months later, a14．如图，OP是∠AOB的平分线，点P到OA的距离为3，点N是OB上的任意一点，则线段PN的取值范围为（　　）A．PN＜3B．PN＞3C．PN≥3D．PN≤3