Read the passage and answer the following questions.
    The word "obese"describes someone who has a lot of body fat.If your body weight is at least twenty percent more than it should be，you will be considered obese.
    Around thirty percent of the world's population is now obese or overweight.Obesity causes many health problems.
    And there are lots of different reasons why people become obese.
    Taking in too many calories
    Compared with previous generations，people are eating for more these days.Not only are we eating more，but we are also eating the wrong things.Many people eat processed food and drinks which are full of sugar.Lots of money is being spent on campaigns to inform people about healthy eating，but many of us still overeat.
    Lack of exercise
    Our lifestyles are also less active.Televisions，computers and other modern technologies have led to the sedentary（久坐的）way we now live our lives.People walk less as they rely on their cars more.Of course，if we are not moving，we can't bum the calories we take in.
    Lack of sleep
    Surprisingly，your chances of being obese will be doubled if you don't get enough sleep.This is true for both adults and children.The reason why this happens is that lack of sleep causes some hormones（荷爾蒙） to change and when these hormones change，we eat more.
    Genetics
    Unluckily，one in six people have a gene that makes them overeat and prefer sugary，fatty food.The gene also means that these people take a lot longer to feel full.
    What can we do to prevent obesity？
    Weight problems often begin in childhood.Therefore，it is important that parents set a good example for their children and encourage good habits.
    To keep a healthy body weight，you must：
①Eat five or six portions（份）of fruit and vegetables every day.
②Have brown rice and bread instead of processed white bread.
③Make sure you don't eat big portions.It can be helpful to weigh your food.
④Make sure______.Even simple activities such as walking around the block or tidying up the house can make a big difference.

（1）Previous generations didn't eat as much as people nowadays do，did they？

No，they didn't.

No，they didn't.

（2）What has led people to have a sedentary lifestyle？

Televisions，computers and other modern technologies have led to sedentary lifestyle.

Televisions，computers and other modern technologies have led to sedentary lifestyle.

（3）What will happen to a man if he doesn't get enough sleep？

He will be obese.

He will be obese.

（4）Why does it take longer for some people to feel full？

Because some people have a gene that makes them overeat and prefer sugary.

Because some people have a gene that makes them overeat and prefer sugary.

（5）Complete the blank in the passage. （Use less than ten words.）
Make sure

to keep doing simple activities every day.

to keep doing simple activities every day.

（6）What do you think of being obese？Why do you think so？

I think it's terrible，because being obese is being unhealthy.

I think it's terrible，because being obese is being unhealthy.