补全短文
A. What struck him B. therefore C. broke out Phrases: A. the plague【T1】______in southern England B.【T2】______was the conjecture that the same force of gravity C. Newton【T3】______spent the next eighteen months at home In the year 1665, when Newton was twenty-two,【T4】______, and the University of Cambridge was closed.【T5】______, removed from traditional learning, at a time when he was inpatient for knowledge and, in his own phrase, "I was in the prime of my age for invention. " In this eager, boyish mood, sitting one day in the garden of his widowed mother, he saw an apple fall.【T6】______, which reaches to the top of the tree, might go on reaching out beyond the earth and its air, endlessly into space. Gravity might reach the moon: this was Newton's new thought: and it might be gravity which holds the moon in her orbit.