短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同学写的以下作文。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。

    Now I'd like tell you something about my part-time job this summer vacation, in which I worked as the guide in a travel agency. It was the first time that I have earned money on my own. I've realized what hard my parents work to support for the family. I used to keep on ask them for money, but now I'll learn to share worry with my parents. I've learned how to get along well with others. Beside, I have gained some social experience and you have learned something that can't be learned from textbook. In a word, I had a wonderfully and valuable summer vacation.

4.8gO₂和0.2molCO₂ ， 质量之比是　 ，在同温同压下的体积之比是　 ．相同物质的量的SO₂和SO₃ ， 所含分子的数目之比为　 　 ， 所含O原子的物质的量之比为 

在矩阵A的变换下，坐标平面上的点的横坐标伸长到原来的3倍，纵坐标不变．

计算行列式 的值．

定义行列式运算=a₁a₄﹣a₂a₃ ． 若=0．

（1）求tanA的值；

（2）求函数f（x）=cos2x+tanAsinx（x∈R）的值域．

现有一瓶气体为NH₃ ， 气体的物质的量为0.2mol。

①气体的质量为，气体中含氢原子的物质的量为 mol。

②气体中所含分子数为。

③气体在标准状况下的体积为。

④将气体甲完全溶解于水中形成500mL溶液，所得溶液溶质的物质的量浓度为 mol•L^-1。

⑤将④中所得溶液取出100mL，加水稀释至1000ml，所得溶液溶质的物质的量浓度为 mol•L^-1。

本题设有三个选考题，请考生任选2题作答.

选修4-2：矩阵与变换

已知矩阵

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

    Dubai was a 6,000-person fishing village half a century ago. Since 1966, when oil was discovered there, the population of Dubai has grown to 2.6 million. Over the years, it (become) a well-known tourist destination .

    attracts tourists to Dubai are tax-free shopping, dry weather, excellent accommodations, delicious food and beaches that go on for miles. In fact, some foreigners come here only (experience) the shopping. There are dozens of shopping malls, (provide) every famous brand you can name. Those outdoor markets sell everything from spices (香料) to gold at fair prices.

    Choosing what places to visit in Dubai is difficult, because even the hotels there are also amazing (attract). The Burj A1 Arab is considered one of the world's best hotels, and is located on its own island, about 1,000 feet offshore from Dubai. Built in the shape of ship, this hotel is still (tall) than the Eiffel Tower and nearly as tall as the Empire State Building. Certainly, there are also other great places of interest to visit.

    Indeed, travelling around this country will (true) give you an amazing experience because of its interesting things  (offer) to all types of tourists.

已知某饱和溶液的以下条件：①溶液的质量、②溶剂的质量、③溶液的体积、④溶质的摩尔质量、⑤溶质的溶解度、⑥溶液的密度，其中不能用来计算该饱和溶液的物质的量浓度的组合是(   )

已知线性方程组的增广矩阵为 ， 若此方程组无实数解，则实数m的值为 ．

二元一次方程组=λ有非零解，则λ= ．

There have been a number of (偷窃) in the area.

直线l的方程为=0，则直线l的一个法向量是 ．

设N_A代表阿伏加德罗常数的数值，则下列说法正确的是（   ）

用所给词汇的正确形式填空

他刚要离开，这时有人闯入了他的房间。

He was just about to leave when someone.

如图是某分子的比例模型，黑色的是碳原子，白色的是氢原子，灰色的是氧原子．该分子是（　　）

​

语法填空，阅读下面的材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

    Why is setting goals so （importance）? Because goals can help you do, be, and experience everything you want in life. Instead always letting life happen to you accidentally, goals allow yourself (make) your life happen in control. (success) and happy people have set lots of goals to help them reach their aims. By (set) goals you can take control of your life. It's like having a map to show you you want to go.

    Winners in life always set goals and then follow. Winners decide what they want in life and then get there by making plans and setting goals. Unsuccessful people just let life happen by accident. (goal) are not difficult to set, and they are also not difficult to reach. It is up to you to find out what your goals really are. It is you decide what to do and in what direction to aim your life.

已知矩阵：A= ， B= ， 则AB的几何意义是？

在标准状况下，在一个容积为VL圆底烧瓶中收集满NH₃ ， 配上塞子、导管等进行喷泉实验后，烧瓶中溶液的物质的量浓度为（   ）