在明清的反封建思想中，反封建的矛头首先指向程朱理学，这是因为程朱理学(　　)

解释“在喉管没有被割破的时候”这个典故。

古诗词阅读。
                                                                                                          登岳阳楼 

                                                                                                        【唐】杜甫
                                                                    昔闻洞庭水，今上岳阳楼。吴楚东南坼，乾坤日夜浮。
                                                                    亲朋无一字，老病有孤舟。戎马关山北，凭轩涕泗流。

如下物体中不是光源的是（   ）

The novel ______ by many people today.