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thunhanbts05
2 năm trước
Phân biệt trẻ đồng sinh cùng trứng với trẻ đồng sinh khác trứng. Trẻ đồng sinh cùng trứng có phải là kết quả của đột biến tiền phôi không? Vì sao?
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XI. Read the following passage and choose the best answers each of the questions. Nylon was invented in the early 1930s by an American chemist, Julian Hill. Other scientists worked with his invention and finally on 27 October 1938, Nylon was introduced to the world. It was cheap and strong and immediately became successful, especially in the making of ladies’ stocking. Today, nylon is found in many things: carpets, ropes, seat belts, furniture, computers, and even spare parts of the human body. It has played an important part : in our lives for over 50 years. 1. Julian Hill was a/ an . A. chemist B. American C. inventor D. all are correct 2. Nylon can be found in . A. many things B. spare parts of the human body C. furniture D. all are correct 3. What does the word “introduce” in line 3 mean? A. tell somebody your name B. tell somebody the name of a person C. bring something new into use for the 1st time D. bring something somewhere 4. Nylon . A. was invented by Julian Hill B. was strong but expensive C. was not very popular D. all are correct 5. Which of the following is not true? A. Nylon was used to make ladies’ stocking. B. At first, people didn’t want to use Nylon. C. Today, Nylon still plays an important part in our lives. D. We can found Nylon in computers. Giúp mình với ạ, mình cảm ơn!! :333

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