单选题 The writer of the passage wants us to know ______.

A、 Copernicus didn't publish his book until his death
B、 Copernicus dared to do nothing against the church
C、 urged by his friends, Copernicus wrote his great book
D、 before he went back to Poland, Copernicus started to work for the church

【正确答案】 A

【答案解析】解析：由文章最后一段第五、六句可知，哥白尼直到死时才出版了他的书。