题目

1918年德国在战场上的失利对其国内产生的影响有                              ( )。 ①爆发了基尔港水兵起义 ②引发了柏林工人起义 ③德意志帝国被推翻 ④意大利帝国倒戈 A．①③④                                    B．①②④ C．②③④                                    D．①②③ The teacher        that his students had difficulty in English grammar, decided to give them more examples.        A．knows      B．to know   C．knowing   D．being known