红细胞吸收无机盐和葡萄糖的共同点是（   ）

同学们来到化学实验室，意外看到了一个不和谐的“音符”（如下图）。由此，激发了同学们的探究欲望。

（1）同学们取该瓶中少量溶液 滴加稀盐酸，看到冒气泡，说明药品已变质，变质反应的化学方程式为：____。
【进行猜想】小天的猜想：NaOH 溶液部分变质；
你的猜想：____。
【实验探究】小天设计如下实验来验证自己的猜想，请完成下表：

探究目的	探究步骤	预计现象
除尽溶液中的CO32-	①：取少量溶液于试管中，滴加足量的CaCl2试剂	____
证明溶液中尚存NaOH	②：向实验①过滤后所得溶液中滴加酚酞试液	____

假设你的猜想正确，并按小天的实验方案进行实验，则你观察的现象____。
【实验反思】（1）下列物质1.BaCl ₂溶液 2.Ca(NO₃)₂溶液 3.Ca(OH)₂溶液4.Ba(OH)₂溶液， 不能替代小天实验中CaCl ₂溶液的是____(填序号) 。
（2）小天第二次滴加的试剂除用指示剂外，还可以用____替代。
【拓展应用】保存NaOH 溶液的方法是____ 。

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有十处语言错误，要求你在错误的地方增加、删除或修改某个词。

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。

Dear Sir,

    How are you? As a exchange student, I am writing to tell you I prefer to move into a single room in next term, as I find it inconvenient to share a room with others. My roommate often held parties at night, made much noise. Besides, his friends are always visiting him, that disturbs me a lot. So I hope to draw your attentions to this problem. If you think in my position, I am sure he will agree that the only solution for me is get a room of my own, one not in the same building and as near to the school campus as possible. I would be gratefully if you could do me the favor.

                                                                                                                                                                                                  Li Hua

A、B两地相距200千米，甲车从A地出发匀速开往B地，乙车同时从B地出发匀速开往A地，两车相遇时距A地80千米．已知乙车每小时比甲车多行驶30千米，求甲、乙两车的速度．

阅读下面短文，根据短文内容选择最佳选项。

    To most people, tea is just a drink. But to Ye Qitong, a Da Hong Pao master grower and blender (配制工) in Wuyishan City, the drink is a work of art. He always wants the traditional skill to keep alive. The 75-year-old man is Wuyi Mountains' most famous tea expert and the local farmers all raise their thumbs as a sign of respect when referring to him.

    Ye says Da Hong Pao tea is a good friend and he spends a huge amount of his time dealing with it and trying to better understand it. Most of Ye's time is spent researching blending skills and passing on his knowledge to students. Ye's biggest concern is that the number of people who can master traditional Da Hong Pao tea blending skills and have truly got its essence (本质) is still too low. As the masters grow older, Ye is worried that these skills may be lost and the long-lasting aroma (芳香) of Da Hong Pao will grow weak.

    "Wuyishan has more than 1,800 tea producers. However, as machinery entered the process (流程), workers are fewer and fewer and they really just press buttons, so they never learn the traditional skills connected to picking and blending," he said.

    "The situation is very worrying, but I am relieved that the recent booming (繁荣的) market for Da Hong Pao tea has prompted (激起) a desire among many young people to learn necessary skills," he said.

    He advises the local government to build some schools to encourage the master blenders and growers to teach more students. He believes that this is the only way to solve the problem.

    "Da Hong Pao tea is a drink with a life of its own. People can almost taste the history, culture, spirits and moods that completely used up the masters who make it," he said.