divided absence but arrange set toward tomorrow across adjust rigid accuse forward cross either backward Your watch always tells you what time it is now, 1) _______ strange things happen to time when you travel, because the earth is 2) _______ into 24 time zones, one hour apart. You can have days with more than 24 hours, and weeks with less than seven days. If you make a five-day journey 3) ________ the Atlantic Ocean, your journey enters a different time zone every day. As you enter each zone, the time changes one hour. You need to 4) ________ your watch to the changeable time. Traveling west you 5) _____ your watch back; traveling east, you set it 6) _________. Each day of your journey has 7) _______ 25 or 23 hours. If you travel by ship across the Pacific, you cross the international dateline ( 国际日期变更线 ). There a new day begins. When you 8) _______ the line, you change your calendar one full day 9) __________ or forward. Hence, traveling west, today becomes yesterday; traveling east, it is 10) ______.