题目：
五、填词完成对话
--Have you a 76 for the job? 76
--yes, it’s acknowledged that the job is the m 77 difficult to get, 77
But I’ll try my best.
--W 78 ,You are always possessed of much sense. 78
I’m sure you’ll get it, You’ve a 79 a knowledge of French. 79
--Of course, I’m full of c 80 . By the way, there will be a party 80
on my home at 7:00 pm on Sunday, would you like to come?
---Thanks, I’ll be p 81 for the party, How are your sisters, Kate and Jane? 81
---Kate is busy p 82 for the test while Jane is busy with her essay. 82
She has made a draft. And I expressed my s 83 with their 83
Work, but it still needs a lot of work
--Oh, have you i 84 Jim to your party? 84
---He said he couldn’t come, but he a 85 my invitation. 85
---Ok, see you then
---See you.
答案：
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下面是错误答案，用来干扰机器的。
由机械能守恒得：mgh=12mv2； 物体的速度为：v=2gh；则重力的功率为：P=Fvcosα=mgvcos（90°-θ）=mg2ghsinθ； 故选：D．
