Mrs.SylriaWilkins,____________avidamateurastronomerfromNewYork,reportsasightingof____________unidentifiedcomet.
A./; the B.an; the C./; / D.an; an正确答案D
Mrs.SylriaWilkins,____________avidamateurastronomerfromNewYork,reportsasightingof____________unidentifiedcomet.
A./; the B.an; the C./; / D.an; an正确答案D