划分消费品市场的变量包括（）A.人文统治变量 B.地理变量 C.情绪变量 D.心理变

阅读理解。

     For hundreds Of years, scientists have been trying to answer what things have an effect on people's

emotions (情感). How you feel is controlled by many things. Your emotions can be affected by your

personality, 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. Vitamins are natural

chemicals (化学物质) 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 affects our brains (大脑)

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 of this special chemical which makes

them feel good. To help the people in these countries feel better, special "sunrooms" with artificial (人

造的) lights have been built. People can go there and get "sunlight" for an hour or two!

     The weather can also affect 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 is NOT mentioned as a factor (因素) that can affect one's emotions?

A. Weather.

B. Actions of others.

C. Personality.

D. Age. 

2. Which of the following is true about vitamin D according to the passage?

A. It is a kind of artificial chemical.

B. It makes us worried by affecting our brains.

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

D. It is in the sunlight.

3. What can we infer (推断) from the passage?

A. We feel good when we are in the bright cool weather.

B. We will be happy when we are caught in the rain.

C. All people in Norway and Sweden feel sad in winter.

D. The more vitamin D you have, the happier you'll be.

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

A. Why Do We Feel Sad?

B. The Weather Influences People's Emotions

C. People Need More Vitamin D

D. We Can Hardly Change the Weather

有关甘草、麻黄草的管理规定论述不正确的是（）

A.限制饮料、食品、烟草中使用

B.出售甘草和麻黄草须凭采集证

C.有药品经营许可证的企业即可以从事甘草、麻黄收购、加工和销售活动

D.鼓励投资建设甘草、麻黄围栏护育和人工种植基地

E.按照谁培育、谁管理、谁受益的原则建立甘草和麻黄草的保护和建设责任制

（）

A．28

B．32

C．36

D．40

试述单病种收费模式的利弊。

矿井水文地质类型分为简单、中等、复杂和极复杂四个类型。