单项选择题

According to Ricky Bland, why is it necessary to improve training in the UK

A．To equal the quality of training in other countries.
B．To satisfy the demand from workers.
C．To raise productivity levels.
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单项选择题
According to the writer, how did the young scientists feel at the beginning of the flight（）

A．Sick.
B．Nervous.
C．Keen.
D．Impatient.
单项选择题
21（）

A．award
B．serve
C．issue
D．present
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