题目内容：

For hundreds of years, scientists have been trying to answer what things have an influence on people’s emotions. What your feeling is always controlled by many things. Your emotions can be influenced by your personality (个性), by the actions of others and by events around you. Perhaps you don’t know your emotions can be influenced by the weather as well.

People often say they feel good when the sun is shining and sad when it is cloudy. In fact, sunlight makes us feel good. When sunlight hits our skins, our bodies produce a vitamin(维生素）. Vitamins are natural chemicals which we all need to stay healthy. Sunlight helps our bodies produce vitamin D. Vitamin D helps our bodies make a special chemical. This special chemical influence our brains and makes us feel happy. For example, there are long, dark winters of little sunlight in Sweden and Norway, so many people in these countries often feel sad. Without much sunlight, their bodies produce less vitamin D. Without enough vitamin D, their bodies make less ofthis special chemical which makes them feel good. To help the people in these countries feel better, special“sunrooms”with man-made lights have been built. People can go there and get “sunlight” for an hour or two.

The weather can also influence people’s emotions in other ways. Hot weather can make people angry because people feel uncomfortable when they are hot. In the same way, rain can make people angry because being wet can be unpleasant. As you can see, the weather can have an effect on the chemicals which control our brains. Through these ways, the weather can influence our emotions. Sadly, while the weather can change us, we can hardly change the weather.

1. Which of the following can bet described as a factor(因素) that can influence one’s emotions?

A. Weather.         B. Actions of others.

C. Personality      D. A, B and C.

2.What’s the meaning of the underlined word “emotions” in Chinese?

A. 运动           B. 情绪                  C. 感动           D. 激动

3.Which of the following is TRUE about vitamin D according to the passage?

A.  It is a kind of man-made chemical.

B.  It makes us worried by influencing our brains.

C.  It is needed by us all to keep fit.

D. It is in the sunlight.

4.What may be the best title for this passage?

A.  Why Do We Feel Sad.

B.  The Weather Influences People’s Emotion.

C.  People Need More Vitamin D.

D.  We Can Hardly Change the Weather.