【答案解析】 Possible Strategies to Fight against Drought in China
   Drought is a serious problem in China. Every year, many provinces are hit by this natural calamity. Drought threatens the provincial economy, particularly farming, fishery and animal husbandry. Hence, people should take action to prevent and resolve drought issues.
   First of all, water resources should be preserved to prevent rivers and underground water from drying. To realize this purpose, vegetation should be protected. In China, a great number of forests are felled illegally every year and as a result, water resources are destroyed directly. Trees should be replanted to balance the ecosystem along rivers. Trees transpire water into the air, creating clouds. And as a result, rain forms. Trees also protect streams from wood debris and silt, and keep safe the aquatic environment of the ecosystem. Therefore, it is important to protect and cultivate trees so as to maintain water resources.
   In addition, the water-saving technology should be applied in agriculture and industry. The most important issue is to enhance people's awareness of saving water resources, avoiding wasting water not only in daily life but in every sector of industries. Subsequently, scientists should focus on exploiting new products to save water. For example, a device for flushing toilets has been designed based on the principle of pressure from the water supply system rather than the force of gravity to discharge water into the bowl, so that less water is used than conventional flush toilets. Another case is the mechanism that can make full use of waste water to irrigate farmland. It is obvious that the development of science and technology can help to save water.
   Moreover, our governments at all levels can increase cloud seeding to bring rain to the drought-stricken provinces. Cloud seeding is conducted by rockets, a method already being used in major cities. This new technology, however, is efficient in supplying artificial rain only for small arid areas. Further research should contribute to serious drought in wide and far country.
   In conclusion, both the establishment of laws and regulations and application of science and technology are feasible in resolving the problems of drought.