题目内容：

阅读理解。

Everyone knows that eating too much junk food is not good to our health. Yet, what is it about junk food that is so completely irresistible(无可抗拒的)? For one thing, it’s everywhere. From chips in fast food restaurants to candy in supermarkets, junk food always seems available. Thankfully, science is now providing new clues to help us reduce snacking.

Make friends with dainty(讲究的) eaters.

Studies have found that people tend to increase or reduce the amount of food they eat depending on what their companions are taking in.

See happy movies… and always get the smaller bag of popcorn(爆米花).

According to some experts, people eat up to 29% more popcorn if they are watching a sad or serious movie, compared to when they are watching a comedy. Viewers consumed almost 200 calories more when snacking from a large bucket, as opposed to when given a medium-sized container.

Eat breakfast.

Nutritionists have gone back and forth（来来回回）about the question of how much to eat in the morning, but new studies suggest that consuming a good breakfast is a must. Surveys on long-term weight-loss show that two key factors in keeping weight down are eating breakfast and exercising.

Divide your food and conquer overeating.

Any kind of dividing your food into portions slows down your eating. Any kind of marker makes you aware of what you’re eating and of portion size. Researchers advise reallocating（再分配）snack foods into small plastic bags. It sounds simplistic, but it works.

1.Why do people eat too much junk food though it is bad for our health?

A. It’s delicious from chips to candy.

B. It’s easily taken everywhere.

C. Because it’s available here and there.

D. It’s easily bought in fast food restaurants.

2.Which of the following is TRUE according to the passage?

A. People are likely to eat more food when staying with friends.

B. Nutritionists have the same opinion about how much to eat in the morning.

C. People prefer to snake from a large bucket.

D. If people are watching a tragedy, they eat up to 29% more popcorn.

3.What will he or she do if he or she wants to lose weight?

A. To eat nothing in the morning.

B. To eat breakfast and exercise.

C. To get up early and to go to bed late.

D. To snack from a medium-size bucket.

4.What is the text mainly about the rule(s)?

A. how to eat properly and healthily.

B. how to make friends with dainty eaters.

C. how much to eat in the morning.

D. how to control overeating.