题目内容
用于设置残影效果与原素材画面之间的混合模式？
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残影时间的单位为帧。
起始强度用于设置残影画面开始的强度。
衰减用于设置残影画面减弱的程度。
[音频]Directions: Listen to the short passage and fill in the blanks with the missing words.Dear Mr. Smith, _______the Desheng Electronics Company, it is my great pleasure to _______our annual sales conference, which will _______on December 10~15, 2017 at Beijing Conference Center. Enclosed you’ll find the schedule for the conference, accommodation arrangements and a business activity program. We would _______if you could attend our meeting. If you have any questions, please _______on 010-43875546.
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