单项选择题

At first everything went well with the project but recently we have had a number of （） with the machinery.

A．disturbances
B．setbacks
C．outputs
D．distortions

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单项选择题
His actions were more （） of his real purpose than were his words.

A．magnificent
B．significant
C．splendid
D．superb
单项选择题
It is not easy to learn English well but if you （）, you will succeed in the end.

A．hang up
B．hand about
C．hang in
D．hang on to
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