Motorways help people travel quickly and cover long distances but they also cause problems. What are the problems of motorways and what solutions are there?
主体段 1：可能造成的问题 1+可采取的措施
主体段 2：可能造成的问题 2+可采取的措施
背景引入：Many countries in the world rely on motorways for speedy and efficient transportation, as they are a very convenient way of travelling long distances. However, motorways also have negative aspects such as dangerous traffic, damage to the environment and pollution.
话题介绍：In this essay, I will look at some of the problems of motorways and how to overcome them.
问题 1：One major problem of motorways is that they can be dangerous. In many countries, cars travel very fast on the highway. This means that any accidents are more likely to be serious and involve many vehicles. Sometimes in bad weather, several vehicles crash into each other and many people are killed or injured.
解决方案：This problem could be solved in a number of ways. People could have special lessons on how to drive safely on motorways. In addition, special signs could be displayed when driving conditions are bad in order to make people drive more slowly and safely. Alternatively, the general speed limit could be reduced slightly.
问题 2：Secondly, motorways can spoil the environment. Motorways often go through beautiful areas and may damage plants and wildlife. In addition, the large amount of traffic on motorways produces both air pollution and noise pollution.
解决方案：However, this problem could be avoided by building motorways through less beautiful areas or putting some sections in tunnels. And governments could help to reduce air pollution by making environmentally-friendly cars cheaper. Noise pollution could be reduced by changing motorway surfaces or by putting up sound-proof fences.
Despite the problems of motorways, they are necessary and useful. With careful preparation and planning, the problems they cause could be reduced. People today are also more aware of environmental issues and as a result cars and road transport in general are becoming more environmentally-friendly.
rely on 依靠
in addition 此外