许多违法犯罪行为都是从不良习气开始的，下列俗语中与其他不同的是（    ）

①有利于完善生产要素按贡献参与分配的基本经济制度

②是优化资本布局，增强公司整体功能和效率的重要途径

③是建立公司的长效激励机制的重大举措

④有利于提高居民收入在国民收入分配中的比重

增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。

删除：把多余的词用斜线(\)划掉。

修改：在错的词下划一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者(从第11处起)不计分。

Notice

    A grand event celebrating the 110th anniversaries of the founding of our school will be holding on September 12th, 2017. Former schoolmates from home and abroad are warm welcome to attend them. The celebration is planned to start at 9:00 am and end at 5:00 pm in the school gym. After enjoyed the wonderful performances presented by teachers and students, you are to attend speeches and teaching seminars be held in the teaching building.

    Please be in time and do remember not to walk about during the celebration. Taking photos or asking questions are allowed. Anyone that wants to make a speech should get well prepared ahead of the time.

Students' Union

June 15th, 2017

科学家将正常狗的胰腺切除后，发现狗的尿液中出现了葡萄糖，并出现糖尿病人的一些症状；将正常狗的胰管结扎，发现胰腺大都萎缩，只有内部一团团的细胞﹣﹣胰腺活着，并且尿液中没有出现葡萄糖．科学家在根据以上实验现象得出确定结论的同时，又可以进一步作出的假设是（　　）