A:①②
B:②③
C:①④
D:③④
根据句意,用括号内所给单词的适当形式填空。____ The maths problem is so difficult that few of the students can work it out_______ (easy).____ Jim is a brave man. He always tells_________ (he) to calm down when he meets trouble.____ Very few of people believe what the boy says because he is_________ (honest).____ Everyone was very happy because of the famous writer’s _________ (arrive).____ In the film, the soldiers were excited when they got their________(wife) letters.
与“法兰西第一帝国、滑铁卢、《法典》”三个关键词都相关的历史人物是( )
求证:△ABD≌△ACD.
— __________eating fruit.
下列化学反应属于水解反应的是( )
①核酸→核苷酸
②葡萄糖→丙酮酸
③ATP→ADP.