Last spring a Colorado health department survey of 72 playgrounds in private child-care centers found unsafe conditions in 95 percent of them and they ranged from splinters to equipment near collapse.
A) unsafe conditions in 95 percent of them and they ranged
B) conditions in 95 percent were unsafe and ranging
C) the ranging of unsafe conditions in 95 percent of them to be
D) that 95 percent had unsafe conditions ranging
E) that 95 percent of them had conditions that were unsafe; the range was
答案是D，不知道为何直接可以用95percent这样的形式，我不记得OG上有这样的形式表达，为什么E是错的呢 | 
