Passage One Strange things happen to time when you travel, because the earth is divided into twenty four time zones, one hour apart. You can have days with more than twenty-four hours, and weeks with more or fewer than seven days. If you make a five-day trip across the Atlantic ocean, your ship enters a different time zone every day. As you enter each zone, the time changes one hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has either twenty-five of twenty-three hours. If you travel by ship across the Pacific, you cross the international date line. By agreement, this is the point where a new day begins. When you cross the line, you change your calendar one full day, backward or forward. Traveling east, today becomes yesterday, traveling west, it is tomorrow! The difference in time between zones is _________ . A.more than seven days B.twenty-four hours C.one hour D.seven days The International Date Line is the name for _______.A.any time zone in the Pacific Ocean B.any point where time changes by one hour C.the point where a new day begins D.the beginning of any new time zone If you cross the Atlantic Ocean going east，you set your clock ______.A.ahead one hour in each new time zone B.head by twenty-three hours C.back one full day for each time zone D.ahead one hour for the whole trip From this selection, it seems true that the Atlantic Ocean ______.A.is in one time zone B.cannot be crossed in five days C.is divided into five time zones D.is divided into twenty-four zones