（）charts are often used to show the contribution of each item to the whole. 正确答案：Pie

（）graphs compare values across categories or treatments. 正确答案：Bar

（）graphs show data points over time. 正确答案：Line

Every graph needs title,（）, scale and key. 正确答案：label

When you are drawing a graph by your own, try to match the（）with what they look. A.titleB.dataC.keyD.size正确答案：data

The numbers on the pie graph should sum to（）。 A.50B.90C.100D.110正确答案：100

Graph should have a（）to explain what it is about. A.titleB.keyC.scaleD.label正确答案：title

Generally speaking, a pie graph should have no more than（）segments. A.sevenB.eightC.nineD.ten正确答案：eight

If you want to give more details to something that has been said, you say: “I’d like to（）on the background information of this project.” 正确答案：elaborate

A summary provides a concise reminder of what the speaker wanted the audience to remember from his presentation. A（）is a message that logically comes out of the ideas developed in the speech. 正确答案：conclusion

Many presenters don’t see the power of a closing. Without summarizing the major points, they make an（）ending by saying “That’s all. Thank you for your time. Any questions?” 正确答案：abrupt

Opening a presentation with a question can engage audience immediately. If a presenter opens with a response question, he/she expects audience to answer it. If he/she simply wants to get audience’s brains working, a（）question is used. 正确答案：rhetorical