简述市场调查与市场预测的区别。
参考答案：（1）市场调查和市场预测的研究对象不同。市场调查的对象是市场的过去和现状，及时捕捉市场信息，弄清事实真相，如实地反映市场变化情况；而市场预测的研究对象是尚未形成的事物和现象，其主要任务是对未来市场供求的变动趋势及时作出判断和估计。
（2）它们的研究重点不同。市场调查着重于研究用什么方法和方式可取得真实可靠的消息；市场预测着重于研究用什么方法找出预测目标的演变规律和作出预测推断的依据。
（3）它们的研究范围不同。市场调查的研究范围要广阔的多，凡和市场有关的直接、间接因素都在调查之列；市场预测主要就销售（供应）量、销售（供应）额、价格、盈利额等指数进行分析和测算，其范围要比市场调查窄得多。
| 阅读理解。 |
| Can we live without salt (没有盐)? No, salt is very important (重要) to us. We need salt in our food. Animals (动物) need it, too. Most (大部分) of the salt in our country comes from the sea (海). People dig (挖) great pools (池塘) and let sea water in. When the sun dries up (使干枯) the water, people can get salt from the ground. The salt is white, clean and beautiful. There are a lot of salt wells (井) in Sichuan. A salt well is much like a water well. People bring the well water up to the ground and then dry it in big jars over fire. In this way, they get salt. We can also get salt mines. Some years ago people in JiangXi found (发现) a big salt mine and soon opened it. people there no longer (不再) need salt from other places (地方). In the northwest (西北) of our country, there are many salt lakes (盐湖). Some of these lakes are very big. The salt in a big lake even can meet the needs of our people for many years. |
| 1. We can't live without salt, so ______. |
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| A. we need it in our food B. animals don't like to have salt C. it is nothing to animals D. we dry up the water in the river. |
| 2. We get most of the salt from ______. |
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| A. salt lakes B. salt wells C. salt mines D. sea water |
| 3. People in Sichuan get salt from ______. |
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| A. jars B. fire C. salt wells D. salt mines |
| 4. Some years ago, people found and opened a big salt mine ______. |
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| A. in Sichuan B. In JiangXi C. in the northwest D. near the sea |
| 5. The best title of this passage may be "______". |
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| A. Salt B. Salt Wells C. Salt Mine D. Sea Water |