Cho ba nguyên tố M, X, R trong đó R là 1735Cl . Biết trong nguyên tử M số hạt nơtron nhiều hơn số hạt proton là 1. Số hạt proton trong M nhiều hơn trong X là 6. Tổng số hạt nơtron trong nguyên tử của M và X là 34. Tổng số khối các nguyên tử trong phân tử MR là 74. Tính số khối của M và X.

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Ex 7: Finish the following sentences in such a way that it’s as similar in meaning to the original sentences. 1. I love to read books very much. => I enjoy………………………………………………. 2. I often went to the cinema at weekends. => I used………………………………………………. 3. Shall we go to the movies tonight ? =>He suggests………………………………………………. 4. Can you help me? =>Do you mind………………………………………………. 5. He doesn’t find any difficult to get up early. =>He is used to………………………………………………. 6 Nam is too young to see the horror film. =>Nam is not………………………………………………. 7. I do this exercise in three and a half hours. => It takes……………………………………………………. 8. I like cartoon film. => It’s interested in……………………………………………… Ex8: Choose the best answer. 1. Would you like……… (have) something to eat? A. having B. to have C. have D. to having 2. My teacher made me………. (answer) the questions. A. answering B. to answer C. answer D. answers 3. He used……. (play) games every day but now he gives up……….(play) A. to play…play B. to play…… playing C. play …. play D. playing....play 4. It’s difficult…………. (get) used to……(eat) with chopsticks? A. to get…eating B. to get…… to eat C. get …. eat D. get....eating 5. They prefer…….. (watch) film to drama. A. watch B. watching C. to watch D. to watching 6. We decided …….. (rent) a houses with a swimming pool. A. rent B. renting C. rend D. to rent 7. Let me …….. (pay) a meal. You paid last time. A. rent B. renting C. rend D. to rent 8. I hate …….. (see) a child……… (cry) A. see…cry B. to see…to cry C. seeing…crying D. to see…to cry 9. Can you help me……….(get) the dinner ready? A. get B. getting C. to get D. got 10. I’ve enjoyed……..(meet) you. I hope……(see) you again. A. meet…see B. meeting ....to see C. meeting…seeing D. to meet…to see GIÚP MK BÀI NÀY VS cám ơn trc nhaaaa