问题 单项选择题 A1型题

构成视网膜神经上皮层的神经细胞中不包括()。

A.神经节细胞

B.视网膜色素上皮细胞

C.视杆细胞

D.视锥细胞

E.双极细胞

答案

参考答案:B

解析:视网膜是由胚胎时期神经外胚叶形成的视杯发育而来,视杯外层形成单一的视网膜色素上皮层,视杯内层则分化为视网膜的内9层即神经上皮层。

写句子

把下列反问句改成陈述句。 

(1)王老师带病工作,我怎能不感动呢? 

                                                                                                            

(2)我们遇到困难怎么能退缩呢?

                                                                                                             

(3)水浇多了,花能不死吗? 

                                                                                                            

(4)这不是伟大的奇观吗?

                                                                                                            

(5)说出的话难道可以不算数? 

                                                                                                            

(6)要想取得好成绩,不刻苦学习怎么行?

                                                                                                             

(7)这个故事怎能不使我感动得流泪呢? 

                                                                                                            

(8)没有那两只手,这里还不是一片荒坡吗?

                                                                                                             

选择题