một vật có khối lượng 45kg có thế năng 4500j so với mặt đất, độ cao so với mặt đất

Câu 1: ................. refers to the existence of different kinds of animals and plants which make a balanced environment. * 1 điểm A. biodiversity B. sample C. organism D. submarine Câu 2: You are not right. If I ________ you, I ___________ that. * 1 điểm A. were/would not do B. was/would not do C. had been/wouldn’t have done D. am/will not do. Câu 3: He missed the train yesterday. If he ________ early, he _______ the train. * 1 điểm A. got up/wouldn’t miss B. had got up/wouldn’t have missed C. gets up/won’t miss D. had got up/would have missed cau4 Pele is considered one of the greatest football players of all time. He was born in 1940 in Brazil. As a football player, Pele was famous for his powerful kicking and controlling the ball. He joined a Brazilian football club in 1956, and in 1962 he led the team to its first world club championship. Pele became the only player to participate in three World Cups in 1958, 1962 and 1970. By 1974, Pele had scored 1200 goals and became a Brazilian national hero. He played for an American football club for two years before he retired in 1977. Later Pele became an international ambassador for the sport, working to promote peace and understanding through friendly sport activities. 1. What was Pele famous for as a football player? * 1 điểm Câu trả lời của bạn Câu 5: Nam failed the exams because he didn’t work hard.( IF) * 1 điểm Câu trả lời của bạn. Câu 6: You look so tired. You should ……………… to the doctor. * 1 điểm A. go B. to go C. going D. to go. Câu 7: I would have bought a new bicycle if I ……………………….…………. enough money.( have) * 1 điểm Câu trả lời của bạn. Câu 8 : The .................... of forests seriously threatens animal and plant life. (destroy) * 1 điểm Câu trả lời của bạn câu9 : If I _____ you, I would tell him the truth. * 1 điểm A. have been B. had been C. am D. were cau10 : She said to me" I am waiting you in my classroom now" *