The advantage of living in the countryside is that the air is (unpolluted).. Many wild animals are now listed as (dangerous species and need protection. Many people are still not aware of the (destroy effects of cutting down trees. Burning fossil fuels could have (disaster ) effects on the environment. This organisation was set up to preserve endangered species from (extinct) (deforesticion has been shown to cause floods and drought. Much of the country will be (habit ) because of the increasing desertification.

Một ô tô khối lượng 1 tấn đang hoạt động với công suất 5 kW và chuyển động thẳng đều với vận tốc 54 km/h thì lên dốc. Hỏi động cơ ô tô phải hoạt động với công suất bằng bao nhiêu để có thể lên dốc với tốc độ như cũ? Biết hệ số ma sát giữa bánh xe và mặt đường không đổi, dốc nghiêng góc 2,3o so với mặt đường nằm ngang và g = 10 m/s2.

Complete the sentences with the correct forms of the words in brackets. 1.Recent school improvements to internet (connect) have resulted in more successful courses. 2. Online learning is one of the (digit) learning types, which is normally done through the internet. 3.In order to improve the learning environment, specific (strategy) management is needed. 4. The success of an online course depends a lot on the (prepare) for the teaching environment. 5. (Face) 6. (Blend) classroom practices are combined with computer-mediated activities. learning is a mixture of online and in-person delivery. 7. Traditional classroom-based learning requires the physical (present) of both teacher and student.