Strange things happen to time when you travel, because the earth is (11) into twenty-four time zones(时区), one hour separate. You can have days with more or (12) than twenty-four hours, and weeks with more or fewer than seven days. If you make a (13) trip across the Atlantic Ocean, your ship enters a different time zone every day. As you enter each zone, the time (14) one hour. Traveling west, you set your clock back; traveling east, you set it ahead. Each day of your trip has (15) twenty-five or twenty-three hours.