ai nhanh thì được điểm Tìm ba số a,b,c biết: a + b = 30; b + c = 37; a + c = 33.

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Tính hóa trị của các nguyên tố sau FeSO4 ZnO H3PO4 SO2

Combine the two sentences into a new one using the given words in brackets. Do not change the given words in any ways. 37. “We have worked together in this factory for 5 years.” said the man (HAD) 38. She doesn’t allow her teenage children to go out in the evening. (ALLOWED) 39. The bird covered the nest with her wings. She wanted to protect her eggs. (IN ORDER TO)

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Có thể chỉ cho mình 12c này sử dụng ngữ pháp gì không ạ 1. Whas name was your , please ? 2. That was a single room , from it ? 3. Could you just fill in when and any where you have just arrive , sir ? 4. Well , actually I haven’t quite made up my mind yet 5. The porter here will carry your bagge and show you the room 6. May I take your bag for you ? 7. Would you please send us our baggage to our room ? 8. Please take this elevation to the 10th floor. 9. Which of these bags are yours , sir ? 10. I must have left it , here 11. There are four pieces of all 12. The Reception counter is staight ahead

VI. Read the paragraph and choose the correct answer A, B, C or D for each gap. Giving positive nonverbal messages can improve your relationship with your child and develop emotional connections in your family. Most children love being hugged and kissed, for example. This warm and caring body language sends the nonverbal message that you want to be close to your child. Some children with special needs – for example, children with autism and sensory sensitivities –might find body contact difficult. On the other hand, negative nonverbal communication – for example, a grumpy tone of voice or a frown – when you’re doing something fun together might send the message that you don’t really want to be there. So matching your verbal and nonverbal communication makes your words more effective. For example, a teacher might explain a math problem using her hands to show size and shape. But when verbal and nonverbal messages don’t match, your child might believe the nonverbal – after all, what you see is what you get. Your child learns a lot about nonverbal communication by watching you. For example, if you approach new people in a relaxed way, your child is more likely to do the same. 23. A hug or a kiss sends the message that __________. A. I want to be loved B. I want to be near C. I want to be emotional D. I want to talk 24. Children with autism and sensory sensitivities find it hard to __________. A. talk B. communicate C. contact physically D. love 25. A frown sends the message that __________. A. I don’t really want to join B. I want to be near C. I don’t want to get fun D. I don’t want you 26. __________ makes words more effective. A. Using positive actions and body language B. Combining verbal and nonverbal communication C. Explaining a problem using body language D. Doing something fun 27. The best way for children to learn nonverbal messages is through __________. A. observation B. communication C. imitation D. messages Read the passage and fill the blanks with the given words. prediction anger deforestation processes decades Natural disasters result from natural (28) ________ of the earth. However, in the last five decades, human activities have contributed to increasing the number of natural disasters. More landslides have occurred as a result of (29) ________. Because there are fewer trees in the forest, the soil becomes loosened and more easily to be flushed down. Industrialization and urbanization contribute to global warming, leading to more intense disasters of all kinds, including hurricanes and tsunami. It is more difficult to have exact (30) ________ of climate patterns such as El Niño and La Niña. According to the Office of US Foreign Disaster Assistance, the total natural disasters reported each year have been steadily increasing in recent (31) ________. In 1980, there were only about 100 hydro-meteorological disasters reported per year but that number has risen to over 300 a year since 2000. If humans do not take action, natural disasters will become more tragic and we won’t be able to cope with the (32) ________ of Mother Nature.

Bài 1: Một vật đi từ A đến B với quãng đường 15km trong thời gian 30 phút, đi từ B đến C với quãng đường 10km, vận tốc là 25km/h, đi từ C đến D với vận tốc 20km/h trong 20 phút. Tính tốc độ trung bình trong suốt thời gian chuyển động Bài 2: 1 vật đi nửa quãng đường đầu với vận tốc 12km/h, nửa quãng đường sau với vận tốc 20km/h. Tính vận tốc trung bình trên cả quảng đường.