A:broke i
B:broke away
C:broke out
D:broke dow
如图,A,B,C是☉O上的三点,BE切☉O于点B,D是CE与☉O的交点.若∠BAC=70°,则∠CBE=____°;若BE=2,CE=4,则CD=____.
①1×5+4=32,
②2×6+4=42,
③3×7+4=52,
④4×8+4=62,
…
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