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      Question

      Which country has unveiled the world’s fastest bullet

      train, the CR450, capable of reaching 450 km/h? 
      A Japan Correct Answer Incorrect Answer
      B France Correct Answer Incorrect Answer
      C Germany Correct Answer Incorrect Answer
      D China Correct Answer Incorrect Answer
      E South Korea Correct Answer Incorrect Answer

      Solution

      China has introduced the CR450 bullet train, which reached a top speed of 450 km/h during trials on the Shanghai–Chongqing–Chengdu high-speed line. The train, to be launched commercially in 2026, features improved aerodynamics, a lighter structure, and reduced energy use, setting a new global speed benchmark 

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