Cho hình chóp SABCD có ABCD là hình thang cân có AD=2a, AB=BC=CD=a, hình chiếu vuông góc của S trên ABCD là trđ I của AD. Tam giác SAD đều. K là trđ AB. Tính góc giữa : 1. SC và ABCD 2. KI và SAB 3. BD và SAB 4. SA và SBD

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Exercise 1. Complete each of the sentences with a suitable word from the box. announced instructors dream hurt awful intelligent appear entertain 1. Do you ever have a ______________ about flying? 2. They haven’t ______________ the winner of the competition yet. 3. The weather was ______________, so we stayed in. 4. As soon as the weather gets warmer, spring flowers will ______________. 5. We’re offering proper training with fully-qualified ______________. 6. I also ______________ clients a lot: take them to restaurants and sports events, that sort of thing. 7. Her leg really ______________, but a few days later it felt much better. 8. Although he is no more ______________ than his younger brother, he wants to do well in life so he puts a lot of effort into his studies. act actors camera crew director episode microphone practise read record scene script table People Equipment Actions Part of a serial actors ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. ………………….. Exercise 2. Read the text and answer the questions. FAKING IT Faking It is one of the most popular reality TV shows in Britain – and there’s an American show, too. It’s a very simple idea – somebody has to learn a new job in four weeks. For example, a punk singer leanred how to be a classical musician, and a computer games tester became a racing driver. The programmes are usually very interesting because the people try really hard – so the audience wants them to be successful. They usually pass the test at the end – but not always. Sian Evans is a young classical musician. Faking It changed her life. She trained to be a DJ for one of the shows. At first she didn’t really like modern music and she didn’t know anything about it. She was also surprised because it was very difficult. But she worked hard and started to like it. She passed the test – in fact, after four weeks she won a DJ competition – and now she enjoys going to clubs and being a DJ in her free time. Why is it a successul and popular show? I think it’s because it has a great message – you can do anything is you really want to. It’s one of my favourite TV shows – it makes me happy! Read the statements and answer whether they are true or false. Write T for true and F for false. 1. The show is about music. 2. The contestants learn a new job. 3. A classical musician became a junk singer. 4. The audience want the people in the show to succeed. 5. Sian Evans failed the test. 6. The text is positive. Exercise 3. Read the text and answer the questions. THE BENEFITS OF TV TV is now taking on more and more importance in our lives. For many it is now the main source of entertainment and they use it as a form of relaxation after a hard day at work or school. It is a way of forgetting about reality for a few hours. Most people like to watch comedy programmes or game shows, which do not require too much concentration. However, there are also many people who see TV differently. They use it to find out about the outside world, as a source of information. They switch it on when it’s time for the news or when there is a documentary on an interesting subject. Some people even learn history and literature by watching historical dramas or adaptations of novels. A thirteen-year-old girl who was found to have a very good general knowledge and was thought to read a lot said, “But I learnt it all from TV.” This is one interesting advantage of TV that many parents overlook. Complete the sentences with a word or short phrase from the passage. 1. For many people, TV is the main source of _______________, but for many others, it is a source of _______________. 2. Programmes such as _______________ or _______________ require little concentration. 3. People who needs information can watch _______________ or _______________. 4. A teenage girl learnt a lot of _______________just by watching TV. 5. Parents shouldn’t _______________ the benefitnof TV in providing general knowledge. ai làm dc cho 5 sao + cảm ơn