Questions 26 to 28 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions.
Now listen to the news. Which of the following is true of the American-made devices
A．They are washing machines. B．They are used to steer and steady the International Space Station. C．They have been plagued with problems for more than three years. D．They will be replaced by the Russian-made devices.