解析　标题归纳题。本文主要就Alex Goldberg创建了导师制，给青年人提供了了解社会、获得社会经验的机会，最后这个项目扩大到国际范围，给青年人改变自己和社会的机会。所以正确答案为B。

　　答案　B

　　阅读理解, 从给的四个选项 (A、B、C和D) 中, 选出最佳选项。

　　The Pacific Ocean is the largest of the world’s four oceans. Its name comes from the Latin meaning “peaceful sea”， and was given by the Portuguese explorer Ferdinand Magellan, whose voyage was plain there.

　　However, the Pacific is not always peaceful. Its islands are often hit by typhoons, and the countries surrounding it have many volcanoes and are often hit by earthquakes. Tsunamis

　　(海啸 ), caused by underwater earthquakes, have destroyed many low－lying coastal towns.

　　The Ocean contains about 46% of Earth’s surface water, and makes up about 32% of its total surface area, more than all of the planet’s land areas.

　　The equator (赤道) divides it into the North Pacific and the South Pacific Oceans, the latter of which contains most of its largest 25,000 islands. The largest landmass entirely within the Pacific Ocean is the island of New Guinea, with Australia to its south；it has been the world’s second－largest island since separating from the Australian mainland.The lowest point on Earth, the Mariana Trench (海沟), lies 10,911 meters below the surface of the Pacific, but the Ocean’s average depth is 4,280 meters.

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