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【多选题】
在PowerPoint2000中，可以将演示文稿保存为______文件格式。A.
演示文稿
B.
演示文稿设计模板
C.
Web页
D.
Word文档
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A.
To lengthen the presentation to the allotted time.
B.
To tells the audience that something important is coming
C.
To show the confiden ce of the speaker.
D.
To emphasize important points
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【单选题】It is (1) matter of common experience that one can describe (2) position of (3) point in space by three numbers, or coordinates. For example, one can say that (4) point in (5) room is two meters from ...
A.
(1)a (2)the (3)a (4)a (5)a (6)a (7)the
B.
(1)the (2)the (3)a (4)the (5)a (6)a (7)the
C.
(1)a (2)a (3)a (4)the (5)a (6)a (7)the
D.
(1)the (2)the (3)a (4)a (5)the (6)a (7)the
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A.
better than
B.
other than
C.
rather than
D.
more than
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