下列几种生物,描述正确的是( )
A.①②③④都具有细胞结构
B.与人体细胞结构最相似的是②
C.③和⑤都有叶绿体,能进行光合作用
D.①常用来制作面包、馒头等食品
答案:B
I was asked to sort out the documents but instead of putting them ______ , I totally _______. [ ]
A. in order; messed up them
B. in an order; made a mess of them
C. in the order; messed them up
D. in an order; made a mess of it
关于视神经胶质瘤的影像学表现,下列哪项错误()
A.儿童多见
B.早期临床表现为视野盲点
C.CDFI显示肿瘤内血流丰富
D.CT检查显示视神经梭形增粗,密度均匀
E.MRI检查显示肿瘤T1WI呈中等偏低信号,T2WI呈中等信号