新修订的《刑法修正案》规定：在法律规定的国家考试中组织作弊的，将视情节轻重给予刑罚处罚。该项规定（    ）

①有利于维护考试公平、促进教育公平                                                      ②有利于加强社会诚信体系建设

③使对作弊的处罚有法可依，有利于促进社会主义法律体系建设          ④能够杜绝考试中的作弊行为

按照生命起源的____学说，地球上原本没有生命，生命是由____逐渐演化来的。

根据短文理解选择正确答案。

                                                        Keeping a diary—a good way to improve English

     When I was at the age of thirteen, I began to keep a diary in English. At first it seemed difficult to me, but now it has begun to be easy. I know it's not possible to learn English well without more practice, I like reading, listening and speaking. After school I often go to the school library to read English stories. My English teacher always helps me translate some passages into Chinese. 

     I have little time to watch TV, or to play computer games. After I finish writing my diary, I always try to correct mistakes with the help of the dictionary. I think that keeping a diary is one of the best ways to improve our English study. 

动物保护色的形成是（　　）