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tatuanbach2006
2 năm trước
Bài 1 : Tìm a,b ∈ N thỏa mãn a+2b = 48 ; (a,b) + 3[a,b] = 114 Bài 2 : Cho 7 số tự nhiên tùy ý . Chứng minh rằng bao giờ ta cũng chọn đc 4 số mà tổng của chúng chia hết cho 4
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Mọi người giúp e làm bài tập với ạ...!!!...Help Me I. Đọc và chọn một từ thích hợp đã cho trong khung điền vào mỗi chỗ trống để hoàn thành đoạn văn sau. LOOK AGO USED CLEANING DANGER Robots entered everyday lives a long time (1) __________. They are already used in many industries like car production, packaging and especially in jobs, in which humans would be in (2) __________. Robots that can do chores like (3) __________ the floor or mowing lawns are already available in stores. In medicine, robots are (4) __________to replace limbs and other parts of the body. Researchers claim that a new generation of robots will be able to do things that were unthinkable in the past. This new generation of machines will do household chores, educate children and even (5) __________after elderly people. II. Chọn một đáp án trong số A, B, C hoặc D điền vào mỗi chỗ trống để hoàn thành đoạn văn sau. Japan, (1) ______on the Ring of Fire on the edge of the Pacific Ocean, has suffered some major earthquakes over the years. However, nothing before compared to the triple disaster of March 11, 2011: a massive earthquake followed by powerful tsunamis (2)_____ led to a serious nuclear accident. The horrors began shortly before three (3)___ the afternoon local time with a 9.0- magnitude earthquake. Its epicenter was nearly 20 miles (4)___the floor of the Pacific Ocean about 80 miles east of the Japanese city of Sendai. The quake was one of the most powerful ever recorded, and the (5)_______ to hit this region of Japan. 1. A. placed B. was C. situated D. lied 2. A. who B. which C. when D. whom 3. A. on B. in C. over D. at 4. A. under B. lower C. below D. upper 5. A. stronger B. strength C. strongest D. strong III. Đọc đoạn văn sau và chọn câu trả lời đúng cho các câu hỏi. Music influences people in different ways or the same person differently at different times. Music may seem to influence people differently. That is because people can react differently to the music. We are able to apply a choosing process to the music we hear. If someone hates jazz, then a jazz piece with a positive effect will probably not make him feel good. A happy song might appear to make an angry person angrier, yet it is not the music itself that is creating the anger; rather it is the positive effect of the music. The angry person does not want to accept the song's happy feeling: it points out his already existing anger, and makes that anger come to the surface. When a piece of music is played and we are listening to it, our body, mind, and feelings are being affected. The musicians of ancient cultures such as China, India, Turkey and Greece understood the effects of music. In fact, Pathagoras, in ancient Greece, introduced a whole science that concerned them. Because the musicians of these ancient cultures understood these effects, they created music that was positive, uplifting, and beneficial. Once the effects of music are better understood, the next step is to gain a better understanding of the music around us, and what effect it is actually having. 1. The text is about_____. A. The science of music B. Understanding music C. The effects of music on human feelings D. Music and an angry person 2. Music_____. A. cannot be chosen B. affects everybody in the same way C. affects us in different ways D. never make us angry 3. According to the text,_____. A. Everybody likes jazz B. Jazz always makes us feel better C. No one likes jazz D. a very angry person sometimes do not accept music 4. In ancient cultures, there used to be a science that concerned the effects of music in_____. A. China B. India C. Turkey D. Greece 5. The word "Once" has a close meaning to_____. A. on time B. when C. because D. if PHẦN D: VIẾT I. Viết lại các câu sau sao cho nghĩa không thay đổi so với ban đầu, bắt đầu bằng từ gợi ý. 1. Ba started learning English in 2013. Ba has ……………………………………………………………………..……….. 2. I don’t know many English words. I wish .................................................................................................................... 3. Swimming in the river is dangerous. It is……..…………………………………………………….…………………….. 4. They built this school 30 years ago. This school ………………………………………………………………………. 5. “How many students are there in your class?” The teacher asked me………….…………………………………………………. II. Sử dụng từ cho trong ngoặc để viết lại các câu sau sao cho nghĩa không thay đổi so với ban đầu. 1.Would you turn off the fan , please ? ( MIND) Would you 2. Nam likes playing basketball in the morning.( INTERESTED ) Nam is 3 . She is too young to ride a motorbike. (ENOUGH) She isn’t 4. Despite of the bad weather , we went to the cinema together.( ALTHOUGH ) Although 5. You shouldn’t eat too much meat. ( BETTER )_. You

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