题干
菠菜表皮细胞和人体口腔上皮细胞都具有的结构是( )
①细胞膜 ②叶绿体 ③细胞壁 ④线粒体 ⑤细胞质 ⑥大液泡 ⑦细胞核
A：①③⑤⑦
B：①②④⑥
C：①④⑤⑦
D：②③⑤⑥
答案(点此获取答案解析）
C
ch more _______ in the UK than in the US, where most people have a mailbox instead.
