In the past, it took a long time for people to find someone. Nowadays, however, the help of online communities, people can get their search (do) within a short period of time. All they need to do (be) get online and upload a picture of the person they are looking for, or share some basic information about this person. Because of the “footprints” people (leave) online, other Internet users are usually able to find anyone they are interested in.

    One example of this is a man who beat a dog cruelly. His  (violent) was recorded and uploaded online. In a very short time, the man was reported to an animal rescue team. In the end, he was punished and made to apologize. example involves a college student who refused (clean) up after her dog on the subway. Netizens revealed her personal information in order to punish her.   (wide) blamed for her behavior, this girl left college eventually. Many people thus began to debate a “witch-hunt” like this went to far or not.

（Ⅰ）求实数a，b的值；

（Ⅱ）若直线l在矩阵M所对应的线性变换作用下的象的方程为x﹣2y﹣3=0，求直线l的方程．

    He says the problem with teachers is, “What will a kid learn from someone who chose to become a teacher?” He reminds the other dinner guests that it's true what they say about teachers: Those who can, do; those who can't, teach.

    I decide to bite my tongue instead of biting his and stop myself from reminding the other dinner guests that it's also true what they say about lawyers—that they make money from the misfortune of others.

    “I mean, you're a teacher, Taylor,” he says to me. “Be honest. What do you make?”

    I wish he hadn't asked me to be honest, because now I have to teach him a lesson.

    You want to know what I make?

    I make kids work harder than they ever thought they could.

    I can make a C+ feel like a great achievement and an A－ feel like a failure.

    How dare you waste my time with anything less than your very best?

    I make parents tremble in fear when I call them:

    I hope I haven't called at a bad time,

    I just wanted to talk to you about something Billy said today.

    Billy said, “Leave the kid alone. I still cry sometimes, don't you?”

    And it was the bravest act I have ever seen.

    I make parents see their children for who they are and what they can be.

    You want to know what I make?

    I make kids wonder.

    I make them question.

    I make them criticize.

    I make them think.

    I make them apologies and mean it.

    I make them write, write, write.

    And then I make them read.

    I teach them to solve math problems that they once thought impossible.

    I make them understand that if you have brains then you follow your heart and if someone ever tries to judge you by what you make, you teach them a lesson.

    Let me make this simple for you, so you know what I say is true;

    I make a great difference! What about you?

假设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10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。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(＼)划掉。修改：在错的词下画一横线，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

    It's reported that some Chinese tourists behave badly travel at home and abroad. They speak loudly in public places, carve characters at tourist attractions, throw a rubbish everywhere, even cross the road when the traffic lights are still red. Such bad behavior had caused damage to what people think of themselves and our country. Actions should be taken to stop this. First, tourists should be educating to obey social and public order, and respect locally religions and customs. Besides, laws should be made to punish those which don't behave politely in public. I hope soon tourists will change their behavior and win respect of themselves and our country.

如图两瓶体积相等的气体，在同温同压时瓶内气体的关系一定正确的是（　　）

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—_________. I still have trouble expressing myself.