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Một số câu hỏi khác có thể bạn quan tâm.

• Read the passage and choose the correct answer:
  Las Vegas, Nevada, is the most famous city for gambling in the United States. Some people say that Las Vegas is a mispronunciation of 'lost wages'. The casinos and hotels have so many neon lights that people call this city in the desert 'The City of Lights'.
  Each of the big hotels in Las Vegas is special. Going into one is like entering another world. One hotel is like ancient Egypt. Another is like a tropical island. Still another is like New York City. These hotels have shows with famous entertainers. Everything looks expensive. But the rooms cost half the price of the rooms in other places. And the restaurants have all-you-can-eat meals for very little money. That's because the hotels make their money from the gambling casinos.
  Las Vegas started in 1905 as a small train stop. There. were only a few buildings in the middle of the desert. In 1946. a famous gangster named Bugsy Seigel built the first casino. He was murdered in 1947. "Iris made him and Las Vegas more famous! In the early 1950s, tourist went to Las Vegas not only to gamble. They went to watch atomic bomb tests in the desert outside the city. In those days, people didn't know it was dangerous. They thought it was exciting.
  Las Vegas is also famous for its many wedding chapels. Like all of Las Vegas, they are open twenty-four hours a day. Getting married is easy. A couple just pays a few dollars for a license, and they can get married immediately. They don't have to wait. Many famous movie stars were married in Las Vegas.
  It is interesting that Las Vegas has more churches for its population anywhere else in the United States. That's not counting welding chapels. Another interesting fact is that tourists have a greater chance of having a heart attack in Las Vegas than in any other American city.
  Question. Las Vegas is also the place. . . . . . . . . . . . . . . .
  

• Give me ______ examples, please! I need more explanation.

• Mọi người cần phải hợp tác vì lý do nào sau đây ?
  
• Câu nào dưới đây là đúng khi nói về hợp tác ?
  

• Dung dịch X chứa NaOH, dung dịch Y chứa Ba(OH)₂, dung dịch Z chứa Zn. Nếu cho V₁ lít X hoặc 1,5V₁ lít X vào V lít Z thì thu được m₁ gam kết tủa. Nếu cho V₂ lít Y hoặc 5V₂ lít Y vào 2V lít Z thì thu được m₂ gam kết tủa. Tìm tỉ lệ m₁ : m₂ biết X, Y, Z có cùng nồng độ.

• Chọn câu không đúng.
  Các loài thủy sản có giá trị kinh tế, thực phẩm cao cấp và đặc sản, đã trở thành đối tượng nuôi trồng để xuất khẩu như:
  

• Từ phương trình , ta tìm được có giá trị bằng:                                 

• Thank you very _______ for your help. It’s so kind of you.

• Người ta treo một đầu lò xo vào một điểm cố định, đầu dưới của lò xo là những chùm quả nặng, mỗi quả đều có khối lượng 200g. Khi chùm quả nặng có 2 quả, chiều dài của lò xo là 15cm. Khi chùm quả nặng có 4 quả, chiều dài của lò xo là 17cm. Cho g =10m/s2 . Số quả nặng cần treo để lò xo dài 21 cm là

• Cho hàm số . Tích các giá trị cực đại và cực tiểu của hàm số bằng: