单项选择题

What happened while Discovery was ascending

A．A large piece of debris flew off the tank.
B．A filler dropped from the ship's thermal tile belly.
C．The fuel tank started to leak.
D．It caught fir
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单项选择题
What is the news mainly about
A．The gloomy local economy.
B．The release of government data.
C．The budget report from the Commerce Department.
D．The rise of local incomes.
单项选择题
Which statement is NOT true
A．A jetliner crashed on Tuesday.
B．There was a storm when the accident occurred.
C．The accident occurred in Paris.
D．The plane skidded off a runway before it crashe
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