Câu 1: Một công ti dệt lập kế hoạch sản xuất một lô hàng, theo đó mỗi ngày phải dệt 100m vải. Nhưng nhờ cải tiến kĩ thuật, công ti đã dệt 120m vải mỗi ngày. Do đó, công ti đã hoàn thành trước thời hạn 1 ngày. Hỏi theo kế hoạch, công ti phải dệt bao nhiêu mét vải và dự kiến làm bao nhiêu ngày? A. 4. B. 6. C. 8. D. 10. Câu 2: Mẹ hơn con 24 tuổi, hai năm sau thì tuổi mẹ gấp ba lần tuổi con. Tuổi của con hiện nay là: A. 5. B. 10. C. 15. D. 20. Câu 3: Một mảnh đất hình chữ nhật có chiều dài hơn chiều rộng 3m. Chu vi của mảnh đất là 100m. Diện tích của mảnh đất là A. 622,75m2 . B. 103m2 . C. 206m2 . D. 1245,5m2 . Câu 4: Một xe đạp khởi hành từ điểm A, chạy với vận tốc 15km/h. Sau đó 6 giờ một xe ô tô chạy từA đuổi theo xe đạp với vậ tốc 60km/h. Hỏi xe ô tô chạy trong bao lâu thì đuổi kịp xe đạp? A. 1h. B. 2h. C. 3h. D. 4h. Câu 5: Một người đi từ A đến B. Trong nửa quãng đường đầu người đo đi với vậ tốc 20km/h, phần đường còn lại đi với vận tốc 30km/h. Vậ tốc trung bình của người đó khi đi từ A đến B là A. 20km/h. B. 25km/h/ C. 24km/h. D. 30km/h Câu 6: Phương trình: (4 + 2x)(x – 1) = 0 có nghiệm là: A. x = 1; x = 2. B. x = -2; x = 1. C. x = -1; x = 2. D. x = 1; x = -1/2 Câu 7: Phương trình (x2 – 1)(x – 2)(x – 3) = 0 có số nghiệm là: A. 1. B. 2. C. 3. D. 4 Câu 8: Tổng các nghiệm của phương trình (x2 + 4)(x + 6)(x2 – 16) = 0 là: A. 16. B. 6. C. -10. D. -6 Câu 9: Với x, y bất kỳ. Chọn khẳng định đúng? A. (x + y)2 ≤ 4xy B. (x + y)2 > 4xy C. (x + y)2 < 4xy D. (x + y)2 ≥ 4xy Câu 10: Cho biết a < b. Trong các khẳng định sau, số khẳng định sai là? (I) a - 1 < b – 1 (II) a - 1 < b (III) a + 2 < b + 1 A. 1 B. 2 C. 3 D. 0 Câu 11: Cho a bất kỳ, chọn câu sai? A. 2a - 5 < 2a + 1 B. 3a - 3 > 3a – 1 C. 4a < 4a + 1 D. 5a + 1 > 5a - 2 Câu 12: Cho a + 8 < b. So sánh a - 7 và b - 15? A. a - 7 < b - 15 B. a - 7 > b - 15 C. a - 7 ≥ b - 15 D. a - 7 ≤ b - 15 Câu 13: Biểu diễn tập nghiệm của bất phương trình x ≥ 8 trên trục số, ta được?

vẽ cho mik 3 bức nha 1. vẽ cảnh ngày tết 2.mẹ của em 3. Quang cảnh quê hương nhanh nha

1>have you ever had communication breakdown ?what is it ? 2>can you tell me about what is communication in the future ?3>verbal Communication and non-verbal communication, which do you like better ?why? 4>when you have language barier,what shouldyou do?

Dịch ra ạ !!!!!!!!!!!!!!!!!!!!!

By mid-century, there will likely be 9 billion people on the planet, consuming ever more resources and leading ever more technologically complex lives. What will our cities be like? How much will artificial intelligence advance? Will global warming trigger catastrophic changes, or will we be able to engineer our way out of the climate change crisis? Making predictions is, by nature, a dicey business, but to celebrate the 40th anniversary of Smithsonian magazine Big Think asked top minds from a variety of fields to weigh in on what the future holds 40 years from now. The result is our latest special series, Life in 20 50. Demographic changes in world population and population growth will certainly be dramatic. Rockefeller University mathematical biologist Joel Cohen says it's likely that by 2050 the majority of the people in the world will live in urban areas, and will have a significantly higher average age than people today. Cities theorist Richard Florida thinks urbanization trends will reinvent the education system of the United States, making our economy less real estate driven and erasing the divisions between home and work. Large migrations from developing countries like Indonesia, Malaysia, Bangladesh, Mexico, and countries in the Middle East could disrupt western governments and harm the unity of France, Germany, Spain, the Netherlands, Poland, and the United Kingdom under the umbrella of the European Union. And rapidly advancing technology will continue ever more rapidly. According to Bill Mitchell, the late director of MIT's Smart Cities research group, cities of the future won't look like "some sort of science -fiction fantasy" or "Star Trek" but it's likely that "discreet, unobtrusive" technological advances and information overlays, i.e. virtual reality and augmented reality, will change how we live in significant ways. Self-driving cars will make the roads safer, driving more efficient, and provide faster transports. A larger version of driverless cars-driverless trucks-may make long haul drivers obsolete. Meanwhile, the Internet will continue to radically transform media, destroying the traditional model of what a news organization is, says author and former New York Times Public Editor, Daniel Okrent, who believes the most common kinds of news organizations in the future will be "individuals and small alliances of individuals” reporting and publishing on niche topics. Các bạn giúp mk 2 câu cuối vs

.......istaller,peter ordavid peter istaller than david

Một ô tô dự định đi từ A đến B với vận tốc 45km/h .Sau khi đi được 3/8 quãng đường với vận tốc đó, vì đường khó đi nên người lái xe phải giảm vận tốc còn 40km/h trên quãng đường còn lại. Do đó ô tô đến chậm 50 phút so với dự định. Tính quãng đường AB. GIÚP MIK VỚI

Mọi người cho mik công thức 3 hình này nhé.

Nêu cảm nhận của em về văn bản Lão Hạc

ĐỀ 5 II. LANGUAGE FOCUS. (3ms) Choose the best options to complete the following sentences. 1. The man __________ in the accident was taken to the hospital. A. was injured B. injures C. injured D. injuring 2. This Temple was built 100 years ago to __________ a Hindu God. A. present B. explain C. express D. honor 3. Viet Nam is __________ country. A. an exporting-rubber B. a rubber-exported C. a rubber-exporting D. an exported-rubber 4. Are you free to __________ for dinner this evening? A. come across B. come over C. go over D. go across 5. While we __________ to school, we __________ an accident. A. were walking / saw B. walking / seeing C. were walking/ were seeing D. walked/ were seeing 6. Compose is a wonderful natural __________. It helps plants grow. A. sandal B. fertilizer C. glassware D. metal 7. This book __________ to the library today. A. has to return B. has to been returned C. has to be returned D. has is returned 8. Mai is talking about her __________ for Tet holiday. A. prepare B. prepared C. preparing D. preparation 9. Angkor Watt should really be known __________ a wonder of the world. A. like B. so C. as D. alive 10. Simon __________ in class for 3 days. A. isn't B. won't be C. wasn't D. hasn't been 11. These beautiful pictures __________ from recycle paper, A. made B. make C. are made D. is made 12. Jane said she __________ in the contest. A. can participate B. would participate C. will participate D. is participating III. READING. (2ms) 1. Complete the passage with words given in the box. (There are two extra words that you do not use). (1m) STUDYING ABROAD More and more young people are (0) recognizing the advantages of living in another (1) __________ and are deciding to study abroad. They realize it's the (2) __________ way to learn about the custom and the way of life of other people. Students exchanges give teenagers the opportunity to live somewhere else for a school year. While they are living abroad, they will eat new food, experience new (3) __________ and learn the way people of their own age live from day to day. Students stay with carefully chosen host families and attend a local school. Every student on the exchange programme has somebody who directly supports them the whole time they are abroad. To qualify an exchange student, you must be aged between 15 and 18 years and be good at a (4) __________ language. 2. Read the passage, and then decide which statement is True or False, (1m) THANKSGIVING DAY Thanksgiving is a national holiday celebrated in Canada and the United States as a day of giving thanks for the blessing of the harvest and the New Year. It is celebrated on the second Monday of October in Canada and on the fourth Thursday of November in the United States. The first Thanksgiving celebration was held in 1621. Traditional foods are turkey, sweet potatoes, fruits and vegetables. Many people have pumpkin pie for dessert at the end of the meal. It is the time for counting our blessings we have received during the year and being with our families and friends. Statements True False 1. Thanksgiving is a national celebration of Canadians and Americans. 2. It is celebrated on 2nd Thursday of November in America. 3. It was first held in 1621. 4. Pumpkin pie is one of the traditional foods on Thanksgiving Day. IV. WRITING (2ms) 1. Rewrite the sentences without changing the meaning. Start with the words provided. a. It's interesting to travel around the world.  Traveling b. "I think Lan eats too much chocolate" said Peter.  Peter said that c. I always keep the window open. I want to enjoy fresh air. (using "so as to")  always d. Could you please give me some information about the English course?  Would you mind 2. There is a mistake in each sentence. Find the mistake and write the correct sentence in the blank below. (1m) Example: I enjoy to go abroad.  B-going A B C a. We are very surprise that he won the first prize. A B C  b. Tom lives in a house built on 1995. A B C  c. I had dinner with my parents at 8 P.M yesterday. A B C  d. Do you finished your homework yet? A B C 