1. (2020八上·西安期末) 阅读下面短文，根据短文内容，完成下列各题。

    Today let me talk about a sport--bicycling. More and more people like bicycling now. Bicycling is fun, healthy and good for the environment. Maybe that's why there are about 1 .4 billion bicycles and only 400 million cars on roads worldwide today.

    Bikes can take you almost anywhere, and there is no oil cost. Get on a bike and ride around your neighborhood. You may find something new around you. Stopping and getting off a bike is easier than stopping and getting out of your car. You can ride a bike to school or work and that is good exercise for you. It has no pollution at all.

    Folding (折叠) bikes are getting popular, too. If you need to take the train, you can just fold the bike and take it with you. You can do the same on a plane. You can put your folding bike in the suitcase.

    Bicycling is good for your physical health. Here are some examples:

    It helps to control your weight.

    A15-minute bike ride three times a week burns off five kilos of fat in a year.

    It can improve your mood (心情).

    It makes people feel enjoyable.

    It is healthier than driving.

1. （1） According to the passage, how many bicycles are on roads worldwide today?

   There are about bicycles on roads worldwide today.

3. （2） Where should you put your folding bikes on a plane?

   You can put it .

5. （3） What can you do to burn off five kilos of fat in a year according to the passage?

   We should spend to ride the bike three times a week.

7. （4） Does riding a bike to school or work have pollution?
9. （5） What does the passage mainly talk about?

   It talks about.