42. How many planets are there in the Solar System now?
(A) 6
(B) 7
(C) 8
(D) 9
(E) 50
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統計: A(0), B(1), C(5), D(1), E(3) #2055844
統計: A(0), B(1), C(5), D(1), E(3) #2055844