Without proper planning, tourism can cause problems. For example, too many tourists can crowd public places that were also enjoyed by the inhabitants (居民) of a country. If tourists create too much traffic, the inhabitants will become unhappy. They begin to dislike tourists and to treat them impolitely. They forget how much tourism can help a country's economy (经济). It is important to think about the people of a destination (目的地) country and how tourism affects(影响)them. Tourism should help a country keep the customs and beauty that attract tourists. Tourism should also advance the wellbeing of local inhabitants.

Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work in the tourism industry. This means that other parts of the countrys economy will suffer.

On the other hand, if there is not enough tourism, people will lose jobs.① Businesses will also lose money. It costs a great deal of money to build large hotels, airports, broad roads, and other things needed by places of interest. For example, a fivestar tourism hotel needs as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owners of the hotel will lose money.

Building a hotel is just a beginning. There must be many support facilities (支撑设施) as well, including roads to get to the hotel, electricity, and sewers to handle waste and water② .All of these support facilities cost money. If they are not used because there are not enough tourists, jobs and money are lost.

根据文章内容，选择正确答案：

1. Which of the following has most probably been discussed in the part that goes before this passage?

A. It is very important to develop tourism.

B. Building roads and hotels is necessary.

C. Support facilities are highly important.

D. Planning is very important to tourism.

2. Too much tourism can cause all these problems EXCEPT ____.

A. a bad effect on other industries