单项选择题

A．20 billion dollars
B．80 billion dollars
C．100 billion dollars
D．120 billion dollars
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单项选择题
A．the Works Manager has made a mistakeB．Holder and Bragg has acted dishonestlyC．the Purchasing Manager has made a mistakeD．more spare parts than needed have been used
A．the Works Manager has made a mistake
B．Holder and Bragg has acted dishonestly
C．the Purchasing Manager has made a mistake
D．more spare parts than needed have been used
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