Tính nhanh 19,98 : 0,5 + 19,98:0,25 + 19,98 x 3 + 19,98 5 sao cho bạn nào trả lời nhanh nhất ạ

Các câu hỏi liên quan

I. Rewrite each sentence, beginning as shown, so that the meaning stays the same. (10 points) 1. When did you start learning how to carve egg shells? ->How long…………………………………………………………………….....................? 2. People in Britain will spend a lot of money on heating next year. ->A lot …………………………………………………………………………..................... 3. Reading that book is very useful for us. - >It’s ……………………………………………………………………………………….. 4. Although Mr Brown is old, he runs a mile a day. ->In spite.........…………………………………………………………………..................... 5. You shouldn’t eat too much meat. => You’d………………………………………………………………………..................... 6. Lan is the youngest of the three sisters. =>Lan has …….………………………………………………………………..................... 7. How heavy is the chicken? =>What ….…...................…………………………………………………….....................? 8. Hai prefers playing badminton to listening to music. ->Haiwould ............................................................................................................................. 9. The ending of the film was quite disappointing. -> We.......................................................................................................................................... 10. The guide speaks too quickly for me to understand. -> The guide doesn't ...................................................................................................................

III. Read the text and fill one suitable word in each numbered blank. (15 points) Some people believe that young children (1) ______listen to classical music. They think it (2) ______change a child’s brain and (3) ______the child clever. They call (4) ______ ‘the Mozart effect’. This idea became very popular in the 1990s. Governments and universities (5) ______a lot of money over the next twenty years to test (6) ______it is true. The research shows that it is (7) ______. Listening to Mozart does not have a permanent (8) ______on your brain. (9) ______, research shows that listening to music can (10) ______children learn. Mike Edwards teaches eight-year-olds. He works in a special school for children with behaviour problems. He is not a music teacher, but in his classroom there is always music. ‘I play the music (11) ______the beginning of the lesson,’ Mike says, ‘and it really works!’ Mike’s students are sometimes difficult to control. ‘They’re not stupid or lazy,’ he says, ‘but they’re sometimes noisy and rude and you (12) ______to be very patient.’ The music is calm and quiet. It helps the children to (13) ______ calm and quiet too. Then they can learn better. ‘I don’t think music changes a child’s brain or personality, but it helps them to concentrate so they can be (14) ______creative. They enjoy coming to class and it makes my job easier because they’re more polite and hard-working.’ So (15) ______Mozart make you a better student? Maybe. But Mike’s students are listening to the blues!