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【简答题】
如图，PA、PB分别切⊙O于A、B，并与⊙O的另一条切线分别相交于D、C两点，已知PA＝6，则△PCD的周长= ．
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举一反三
【单选题】The greatest advantage in allowing each student to find his own group might be that_________
A.
the teacher saves the trouble in doing that
B.
learning is made comfortable in this way
C.
the teacher can easily remember students' names and faces.
D.
brighter students can help slower ones
【单选题】The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident.
A.
find out
B.
finding out
C.
found out
D.
be found out
【简答题】The greatest advantage in allowing each student to find his own group might be53．The greatest advantage in allowing each student to find his own group might be that __________.
【简答题】His greatest __________ was how to find money for a holiday in Europe.
【简答题】The results of LIT CRIT magazine's poll (民意测验) to find the greatest American authors of all time. Top five most popular biographical details. ① Mark Twain 1835 — 1910 The Adventures of Huckleberry Fin...
【简答题】The greatest advantage in allowing each student to find his own group might be that
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