傲视群雄 问鼎天下:选错的...- -|||
来源:百度文库 编辑:高考问答 时间:2024/05/09 19:28:02
A (chemical) element, (over) 90 of which( occurs) naturally on earth,is a (substance made up) of....
()中哪个是错的...
但是后面有of which呀...
()中哪个是错的...
但是后面有of which呀...
occur
既然是90,怎么会是occurs呢?
occurs错误,应该用复数
substance made up