当你遇到下列情况时，你认为说法较委婉得体的一项是（    ）

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。

    I am the shared bike. I'd like to be on the street to serve for people. They can ride me just via a mobile app. But horrible things happen a few days ago. Several people stole some of us with paying their bills on the app but treated us badly. They broke my saddle and even threw my friends everywhere. We felt angry for which those bad guys had done. Thanks to some kindly people, we received careful “treatment”. Now, you help as well as the whole society's attention is what we need most. We are designed to help people who are stuck the heavy traffic. We are neither toy nor private vehicles. Please obey the basic rules.

对某海藻的细胞液中各种离子浓度的分析表明，细胞液中的成分与海水中的成分很不相同．图中阴影部分代表该海藻的离子浓度．

（1）K⁺和Cl^﹣进入细胞的方式属于____ ，这种吸收方式需要的两个基本条件是____和____ ．

（2）Na⁺和Mg²⁺进入细胞的转运方向是____ ．

（3）K⁺和Cl^﹣在细胞内积累，而Na⁺、Ca²⁺、Mg²⁺在细胞液中的含量低于海水中的含量，这表明____ ．

（4）海藻细胞液中各种离子浓度与海水中各种离子浓度不成比例，其结构基础是____ ．