第三部分 情景对话 根据对话内容从题后选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。(5分 每小题1 分)
__The class will be over, Any questions?
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__For today’s homework, you should do the exercise on page 10.
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__First write them down in your exercise books, and then practice them orally until you have learned all of them by heart.
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__ I won’t ask you to hand in your exercise books until the day after tomorrow. Can you manage to recite them next week?
I think you have plenty of time.
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__ OK. If you have any questions, come to my office tomorrow. I’ll be available from 1:30 to 5:30.
__ Thank you very much._____________60_______
__ You are welcome.
A．Shall we do it orally or write out the exercise in our exercise books?
B．It is difficult for us to finish so much work in such a short time .
C．Mr. Gao, what’s today’s homework?
D．Well, we’ll try to finish the homework in time .E.We’ll go if we have any questions.
F.It will take us a lot of time.
G.We’re wasting too much time.
，乙比甲多完成了20个。此后乙因事退出，甲将工作效率提高一倍，5天后完成了任务。问甲共做了多少个零件（）
，解得x=10，故甲共做了4x+10x=14x=140个。