Prices for bikes can run_________$250.
A. as high as
B. so high to
C. too high to
D. so high as
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He hurried to the station_______himself two bours early for the train.
A. to find
B. only to find
C. finding
D. to have found
改变图形实际位置的命令是()。
A. ZOOM
B. MOVE
C. PAN
D. OFFSET
使用STRETCH命令时，若所选实体全部在交叉窗口内，则拉伸实体等同于下面哪个命令()。
A. EXTEND
B. LENGTHEN
C. MOVE
D. ROTATE
下列哪个命令，能够既刷新视图，又刷新计算机图形数据库()。
A. Redraw
B. Redra wall
C. Regen
D. Regen mode
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