单项选择题

Questions 6 and 7 are based on the following news. The likely cause of the plane crash was

A．terrorist attack.
B．foul play.
C．stormy weather.
D．not mentione
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单项选择题
Question 10 is based on the following news.
A．Seaweed is the best anti-obesity treatment.
B．The fibre in seaweed helps to lose weight.
C．Most anti-obesity treatments are ineffective.
D．Food with fibre is commonly eaten dally.
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