通读下面的短文，掌握其大意。然后，从每小题的四个选择项中选出可填入相应空白处的最佳选项。

Dear Tom,

     You asked me why I like living in New Mexico. I like itit is so beautiful. We have mountains, mesas (平顶山), rivers, and forests. Mesa is the Spanishfor a broad, flat-topped mountain. For 12 years, I haveacross the state several times a month, and I still find new places that take my breath away.
     else do I like about living in New Mexico? I like the sunshine. We have over 300days a year, with deep blue skies. Because we are 7,000 feet abovelevel and the weather is very dry, the air is veryand the nights here are much colder than the days.
     The many days of sunshine are a very good thing for our state. Do you know that New Mexicomore than 3,200 hours of sunlight every year? With that much sunlight, we are one of the sunniest states in the United States. Some peoplethat if we could use the energy from all of the sunlight here, we couldmore than enough power for the whole United States!
     The weather in New Mexico is good forenergy out of sunlight, but sometimes the lack of rain is afor people living here. Most of the state is desert, and there isn't enough waterdrinking, growing food, and other uses. Farming is very difficult here because of the water shortage (短缺). There are many laws about water use in New Mexico so that everybody uses just enough. Thefor water increases as more and more new homes are built.
     So, as with all places, there are things that are wonderful and yet others that areabout living in New Mexico. How about you? Do you like living where you are?