摘要： Lily is of the three.
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---John always thinks of others instead of himself
---So he does. It is_____of him to want to help others
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---So he does. It is_____of him to want to help others
| A．aggressive | B．evident | C．typical | D．conventional |
If the radius(半径) of circle Ⅲ in the figure3(图3) is 
of the radius of circle Ⅱ,and the radius of circle Ⅱ is 
of the radius of circle Ⅰ,then the area of the shaded region iswhat part of the area of circle Ⅰ?( )
(A)
; (B)
;(C)
;(D)
 |
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Suppose that in Fig.2，the length of side of square ABCD is 1，E and F are mid-points of CD and AD respectively，GE and CF intersect at a point P．Then the length of line segment CP is