题目内容：

Traveling is one of the most important activities and people have been interested in it for many years. Modern traffic develops fast，so traveling to different places has become much easier than before.

Staying healthy while traveling can make your trip happier. But do you know how to keep healthy during a trip？The following information may be useful for you.

Before traveling：

●Wear comfortable shoes，a hat and sunglasses.

●Take some necessary medicine with you. They can be used when you get sick or have other problems.

●If you do lots of sports like walking or climbing during your trip，you should do some exercise for weeks or months before you leave.

While traveling：

●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 and always clean the cover on the bottle.

1.Traveling has become much easier because of the ______.

A. modern technology

B. modern traffic development

C. travel agencies

D. development of people's lives

2.You should______ before you leave your home for a trip.

A. take some medicine with you

B. clean the cover

C. drink much water

D. wear warm clothes

3.You had better not______ while you are having a trip.

A. wear glasses    B. be too tired

C. wear a hat    D. take a rest

4.If you ______while traveling，your trip will be happier.

A. walk fast    B. eat too much

C. keep healthy    D. climb a mountain

5.The passage mainly talks about______.

A. traveling development

B. how to keep healthy during a trip

C. activities before traveling

D. activities while traveling