单项选择题


Questions 11 to 18 are based on the conversation you have just heard.

A．They have to finish it quickly.
B．They have to use what they have.
C．They have to work hard and do their best.
D．They must redo the project and hope it improves.
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In order to adjust for inflation, the cost of ______ which are the main knowledge products was tripled.
问答题
John told us that __________________ (假如他不发脾气，谈判很可能成功了).
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