题目

动植物体内共有的糖是( ) ①糖原 ②淀粉 ③蔗糖 ④乳糖 ⑤核糖 ⑥葡萄糖 ⑦脱氧核糖 A．①④⑤                               B．②③⑥ C．⑤⑥⑦                               D．①②③ 答案：C() 9.(2015 •益阳) She’s been to Shanghai before ,？   A. isn’t she   B. hasn’t she   C. has she   D. is she