设X~B（100,0.2）,Y=X
A.
the Revolutionary War started in 1773
B.
Betsy Ross thought six-pointed stars would look better than five-pointed stars
C.
girls were proud to wear a cap designed and made by Betsy Ross
D.
there were 13 stars in the middle of the flag
We can learn from the passage that ______.
A.
the Revolutionary War started in 1773
B.
Betsy Ross thought six-pointed stars would look better than five-pointed stars
C.
girls were proud to wear a cap designed and made by Betsy Ross
D.
there were 13 stars in the middle of the flag
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