【正文】
you leave. While travelling ★ Be sure not to eat dirty food or bad fruit. ★ Have enough time to take a rest during your trip. ★ Tap water is not safe, so drink bottled water. When you drink it, remember to clean the cover of the bottle. There may be something dirty on it, such as dust (灰塵 ). 1. Travelling to different places has bee easier because ______. A. there are more planes to take B. modern traffic develops fast C. there are fewer people travelling around D. there are more interesting places for travelling 2. You should ______ before you leave your home for a trip. A. get some medicines B. clean the cover C. drink much water D. wear warm clothes 3. You had better