读台湾铁路、城市和物产分布图，回答问题。

①只有孝敬父母的人，才是一个有责任心的、高尚的人。

②在社会发展的今天，倡导“孝道”，更有其不可替代的时代价值和深远的历史意义。

③孔子曰：“孝，德之本也。”

④从远古时代的“孝感动天”的舜，到“亲尝汤药”的刘恒，“卖身葬父”的董永，“扇枕温衾”的黄香……不胜枚举。

⑤我们国家是有着5000多年历史的文明古国，在其发展的各个阶段，“孝行”贯穿着整个社会发展史。

Jones won the gold medal in the _____ race in the 27^th Olympic Games.                   

    Each year thousands of____ (explore) and tourists visit the polar regions of the Arctic and Antarctica. But the increasing number of people travelling to the ends of the Earth' can have a negative effect____ fragile ecosystems. Should tourists____(allow) to visit polar regions?

    About 40,000 tourists visit Antarctica each year, More than five million travel to the Arctic and sub-Arctic. Transporting tourists to the regions ____(increase) ship and airplane traffic, adding to the risk of pollution, oil spills, and other ____(environment) damage. Because the places where wildlife is accessible ____(be) few in numbers, tourist traffic can become concentrated in specific areas,____ (put) Arctic vegetation at risk.

    Others say that access____ these very special parts of the world should not be restricted to only researches and scientist. Polar tourism allows people to develop deep personal connections with polar regions. “Those ____travel to the Arctic or Antarctica often become cheer leaders for supporting those places” Jim Sano, vice president for travel and____(conserve) at World Wildlife Fund, told TFK.