—It's ____ (Amy) eraser.
直线x+y+1=0被圆x2+y2=1所截得的弦长为( )
⑴ ____
⑵ ____
⑶ ____
⑷ ____
⑸ ____
A．Show me your marker.
B．Touch your desk.
C．Show me your English book.
D．Touch your chair.
E．Show me your Chinese book.
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