单项选择题

Questions 28 and 29 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions.
What led to the failure of NASA’s mission

A．Fuel shortage.
B．Loss of data.
C．Fairing separation failure.
D．Satellite malfunction.

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单项选择题

单项选择题

Questions 28 and 29 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. What led to the failure of NASA’s mission 您的浏览器不支持 audio 元素。