题型:问答题 简答题 I ____ him ____ he left school.A. have recognized; since B. have known; sinceC. had recognized; before D. had known; after 查看答案
题型:问答题 简答题 如需要为PowerPoint演示文稿设置动态效果,如让文字以“驶入”方式播放,则可以单击“幻灯片放映”菜单,再选择( )。A.预设动画B.幻灯片切换C.动画预览D.动作设置 查看答案