单项选择题

A. To arouse the interest of the listeners.
B. To demonstrate his photographic skills.
C. To illustrate the size of some objects.
D. To confirm what he said is true.
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单项选择题
A. His income is insufficient.B. He has no fixed asset.C. He has no stocks or bonds.D. He is self-employed.
A. His income is insufficient.
B. He has no fixed asset.
C. He has no stocks or bonds.
D. He is self-employed.
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