题目

Spaceship：Shenzhou VTime： October 15th，2003Main events：Chinese spaceman Yang Liwei was sent up into space． He went around the earth 14 times in his one﹣day flight． China became the third countryto succeed in manned space flight．Spaceship：ShenzhouⅥTime： October 12th，2005Main events：Chinese spacemen Fei Junlong and Nie Haisheng were both sent up into space． On October I7th， the two Chinese space heroes safely returned to the earth．Spaceship：ShenzhouⅦTime： September 25th， 2008Main events：Chinese spacemen Zhai Zhigang， Liu Boming and Jing Haipeng were se 下列物质中，化学式书写错误的是       A. 硝酸铜    Cu(NO3)2            B. 硫酸铝 AlSO4       C. 二氧化氮  NO2                D. 氧化亚铁  FeO