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NGUYÊN TỬ A CÓ SỐ HẠT MANG ĐIỆN TÍCH NHIỀU HƠN SỐ HẠT KHÔNG MANG ĐIỆN LÀ 18 ; SỐ HẠT PROTON ÍT HƠN SỐ HẠT NƠTRON LÀ 1 . TÌM SỐ HẠT CỦA MỖI LOẠI ( p? e ? n ? ) Đs : p = e = 19 ; n = 20 giải giúp em vs ạ e đang cần gấp ạ
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There are 11 mistakes in the following paragraph. Underline the mistake then correct it. Write your answer in the table below. In 1783, two French brothers build the first balloon to take people into the air. One hundred and twenty years lately, in 1903, the Wright brothers built the first plane with an engine and flied in it . This was in the United States. Then, in 1918, the US Post Office begun the first airmail service. Aeroplanes changed a lot in the next thirty year. Then, in the 1950s, aeroplanes became many faster because they had jet engines. In 1976, Concorde was building in the UK and France. It is the faster passenger plane in the world and it can flying at 2500 kilometers an hour, so the journey in London to New York is only four hours. Today millions of people travel on aeroplanes, and it is difficult to think of a world without them.

There are 11 mistakes in the following paragraph. Underline the mistake then correct it. Write your answer in the table below. In 1783, two French brothers built the first balloon to take people into the air. One hundred and twenty years lately, in 1903, the Wright brothers built the first plane with an engine and flied in it . This was in the United States. Then, in 1918, the US Post Office begun the first airmail service. Aeroplanes changed a lot in the next thirty year. Then, in the 1950s, aeroplanes became many faster because they had jet engines. In 1976, Concorde was building in the UK and France. It is the faster passenger plane in the world and it can flying at 2500 kilometers an hour, so the journey in London to New York is only four hours. Today millions of people travel on aeroplanes, and it is difficult to think of a world without them.

Choose the best answer from A, B, C or D to complete each of the following sentences. 1. _______ July 20,1969, Neil Armstrong was the first human to step _______ the moon. A. On; on B. In; on C. In; in D. At; at 2. Her daughter has _______. A. a short black hair B. a black short hair C. short black hair D. black short hair 3. David can speak English ________ because he practices speaking it every day A. very good B. very hard C. very well D. very badly 4. The weather in developing countries is becoming _______. A. bad and bad B. worse and worse C. worst and worst D. the worst 5. When I lived in the city, I often went to work late because of _______ in rush hours. A. noise B. pollution C. traffic jam D. people 6. Neither they nor she _______ the liveshows. A. like B. don’t like C. likes D. not like 7. She _______ a bath when they came. A. had B. was having C. is having D. has 8. Every year, Mid - Autumn Festival _______ for children. A. is organized B. organizes C. is organizing D. organized 9. Do you mind if I _______ TV while eating lunch? A. watch B. watched C. am watching D. was watching 10. My friend _______ the answer to the question now. A. is known B. know C. is knowing D. knows

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