下列各组植物中，生活环境和形态结构较相似的两组植物是（  ）

增加：把缺词处加个漏字符号（∧），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l1处起）不计分。

    Smart-phone apps certainly make our life easier. And now, it look like they could even do our homework for us. Recent years have seen the release of a variety of study aid apps aimed at student. Most of these apps allow users take a photo of our schoolwork and the correct answers will just appear on their smart-phones. Although they are conveniently, these apps present problems to both parents but teachers. Most students just copy the answers from the app, while only a few use the app to study. Better still, some students even use the study aid apps as social networks. But, this isn't to say that study aid apps should be completely banned. Parents and teachers should give necessary guidance to help students take the advantage of the study aid apps' strengths and avoiding their weaknesses.

下面语句中书写准确无误的一项是（    ）

 2015年5月12日，海西高速公路网的重要组成部分：福建省最长跨海大桥﹣﹣泉州湾大桥正式通车．大桥的建设及通行涉及到许多的化学知识．

（1）制造大桥护栏和斜拉索等重要器件的材料都是钢，钢属于____（选填“金属”或“无机非金属”）材料．

（2）工人给大桥钢铁器件喷上油漆，目的是为了防止铁与____ 和____ 发生反应而生锈．

（3）大桥施工过程中用乙炔（C₂H₂）燃烧的火焰来焊接金属，乙炔在空气中完全燃烧生成二氧化碳和水，该反应的化学方程式为　____ ；乙炔燃烧时将____能转化为热能和光能．

（4）大桥的建成，把隔海相望的泉州环湾城市群连成一片，驱车跨跃泉州湾只需8分钟，有利于节约化石燃料的使用，从而有利于减缓____ （填序号）．

①雾霾天气    ②温室效应    ③赤潮的形成    ④酸雨的形成．

​

史料记载：琅琊王氏，从东晋的王导到南齐的王俭，“六世名德，海内冠冕”，当宰相的接二连三，甚至连白痴也可出任高官。这种现象的出现主要是因为（   ）