Đề thi học kì 2 môn Tiếng Anh lớp 11 năm 2015 trường THPT Lê Hồng Phong

In spite of all warnings, we are still not looking after our planet. Look what is happening to our forests. We are cutting them ___ (33) at an alarming rate. If we keep on doing this, many animals and plants will ___(34) extinct. Rare specie, such as the mountain gorilla, are already in ___(35) . More will follow. Forests are important for another reason, too. They help to slow the rate of global warming. Trees soak up gases like carbon dioxide, which are given ___ (36) by power stations and factories. They also produce oxygen, and act as the lungs of the world.

Energy is fundamental to human beings, especially to poor people – the one- third of humanity that does not have modern energy supplies like electricity, with which their life could be improve.

Many people who live in countryside have to gather fuel wood. This takes a lot of time. Moreover, it causes indoor air pollution because of heavy smoke. For many people living in rural areas in developing countries of the world, biogas is the large energy resources available and costs almost nothing. The main use of biogas is for cooking and heating. As biogas is smoke-free, it helps solve the problem of indoor air pollution. Moreover, plant waste and animal manure cost almost nothing.

The tendency to use renewable energy sources is on the increase when non-renewable ones are running out. In the near, people in the developing countries may use wind or sea waves as the environment-friendly energy sources.