题目内容：

Directions: Read the passage carefully. Fill in each blank with a proper sentence given behind. Each sentence can be used only once. Note that there are two more sentences than you need.

Living off grid

When you need electricity, you just plug in the machine and switch it on. If you need water, you turn on the tap. 1. For many people, these facilities are the basics of civilized society and the idea of living without them seems risky. Yet for a growing number of people, the idea of living off grid — without electricity, water or sewage — is an increasingly attractive lifestyle.

Off-gridders do not have to give up electricity or a modern lifestyle — some choose to, but most use small hydroelectric power systems, solar panels or windmills to generate enough power for their needs. Heating and cooking needs are met by solar energy or wood burning systems, and toilet facilities range from non-water toilets to outside compost toilets. 2. It ranges from traditional yurts (a type of tent) to luxury house with high-speed internet and central heating. Whether they live in simple homes or luxury houses, what they all have in common is that their lifestyles do not create any pollution or carbon emissions — the ultimate goal for off-gridders.

Around 100,000 people are thought to be living off grid in the UK now. 3. They grow their own food, home-school their children and provide their own medical care. They are people who have been priced out of the housing market or who have grown disillusioned with what modern society can offer and who decides that an alternative lifestyle isn’t a pipe dream, but a viable option.

A part from living an alternative lifestyle, cost is a big factor in choosing to live off-grid. Off-grid houses are far cheaper to build than ordinary homes since they don’t need to be connected to the electricity or water supplies and even road access is not necessary. Materials tend to be cheaper, too. Popular options include straw or old tyres and cement.

Surprisingly, the biggest problem off-gridders face is not building their homes or becoming self-sufficient but getting permission to build. Rural areas away from town are the perfect choice but these are often protected by law from construction of any kind or have building restrictions. There are now several websites dedicated to land-sharing so that the costs of buying land and getting permission can be shared, and there are increasing numbers of off-grid communities. 4. Off-gridding could soon be common all over Europe and America.

A.Many are self-sufficient, not just providing their own electricity, water and sewage systems, but in all aspects.

B.After you use the toilet, you flush it and the waste disappears.

C.This shift from individual to group off-gridding reflects the fact that the trend is growing noticeably.

D.They live in a huge variety of types of accommodation.

E.Living off-grid still has a long way to go before it becomes a mainstream way of living.

F.Rather than building permanent homes, vans or mobile homes or even old shipping containers are other options.