Many scientists believe our love of sugar may actually be an addiction. When we eat or drink sugary foods, the sugar enters our blood and affects the parts of our brain that make us feel good. Then the good feeling goes away, leaving us wanting more. All tasty foods do this, but sugar has a particularly strong effect. In this way, it is in fact an addictive drug, one that doctors recommend we all cut down on.

“It seems like every time I study an illness and trace a path to the first cause, I find my way back to sugar, says scientist Richard Johnson. One-third of adults worldwide have high blood pressure, and up to 347 million have diabetes (糖尿病). Why? “Sugar, we believe, is one of the culprits, if not the major culprit,” says Johnson.

Our bodies are designed to survive on very little sugar. Early humans often had very little food, so our bodies learned to be very efficient in storing sugar as fat. In this way, we had energy stored for when there was no food. But today, most people have more than enough. So the very thing that once saved us may now be killing us.

So what is the solution? It's obvious that we need to eat less sugar. The trouble is, in today's world, it's extremely difficult to avoid. From breakfast cereals to after-dinner desserts, our foods are increasingly filled with it. Some manufacturers even use sugar to replace taste in foods that are advertised as low in fat. So while the foods appear to be healthier, large amounts of sugar are often added.

But some people are fighting back against sugar and trying to create a healthier environment. Many schools are replacing sugary desserts with healthier options, like fruit. Other schools are trying to encourage exercise by building facilities like walking tracks so students and others in community can exercise. The battle has not yet been lost.

【小题1】What is the passage mainly about?

A．Our addiction to sugar.

B．Illnesses caused by sugar.

C．Ways to avoid sugar.

D．Why food suppliers add sugar.

【小题2】What does the underlined word “culprit” mean in the second paragraph?

A．Disease.	B．Sweet food.
C．A solution.	D．Cause of the problem.

【小题3】According to the passage, why is it so hard to avoid sugar?

A．It gives us needed energy.

B．It makes us energy efficient.

C．We get used to eating it at school.

D．It's in so many foods and drinks.

【小题4】Which of the following is true according to the passage?

A．Our bodies need to store much sugar as fat.

B．We need very little sugar to survive.

C．Early humans ate more sugar than we do today.

D．Food suppliers are using fruit to replace sugar.