马上就要放寒假了，该买火车票回老家了，但不幸的是某中职学校计算机（2）班学生李二同学不慎丢失学生证，证号为180101。他急需到学校教务处补办一张学生证，但教务处须要班主任写一张证明。假如你是他的班主任张帅，请你在今天为他出具一份证明。

关于《沧浪诗话》，学界素来有所争论。【甲】例如，它到底是崇李、杜呢?还是崇王、孟?这便是一个未解决的问题。应该说，严羽的审美水平和感受能力是相当高明的，屈、陶、李、杜这些中国诗史的冠冕，当然为他所极称赞和推崇，他认为他们的作品是不可比拟的:“汉尚矣，不假悟也。”严羽要求以汉魏盛唐为师，应该说，他主观上更是推崇提倡李、杜的。【乙】但是，晚唐北宋以来的历史潮流和时代风习 ， 却使他实际上更看重讲求韵味，更重视艺术作品中的空灵、含蓄、平淡和自然的美。

司空图与严羽相隔已数百年，居然陈陈相因 ， 若合符契，其中的历史必然问题，不是很清楚吗?【丙】严羽与司空图观点体现出一个律性的共同趋向，即追求的韵味；而且彼此呼应协调，相互补充配合。

病毒是什么？简单说来，。寄生虫是什么意思？就是靠自己没法生存的物种，一定要依附一个宿主。这个宿主可以是一个简单的细菌，可以是一个细胞，可以是一个生物体，也可以是人类这样复杂的生物体。被病毒感染后，细胞或生物体会“坐以待毙”吗？当然不会。“魔高一尺，道高一丈。”？基因编辑就是细胞用来对抗病毒的工具。

病毒与生物体的斗争一直在进行，一直是此消彼长的格局。在现代社会,较高的人口密度给流行传染病的传播创造了一些客观条件，。或许在几年、十几年或是几十年之后，一些病毒又会卷土重来。

①第2列a₁₂ ， a₂₂ ， a₃₂必成等比数列；      

②第1列a₁₁ ， a₂₁ ， a₃₁不一定成等比数列；

③a₁₂+a₃₂＞a₂₁+a₂₃；

④若9个数之和等于9，则a₂₂＜1．

下面A～F是几种常见的烃的分子球棍模型，根据这些模型回答下列问题：

—She is (分发) books to the children.

王立群教授在《中国脊梁》一书中写道：“有一种人，知道自己要做的事是可以成功的，便持之以恒，坚持下去，最终克服各种困难，得偿所愿，这是成功的人。有一种人，知道自己要做的事是不可能实现的，便改弦更张，不再坚持，终于没有碰壁，这是明智的人。还有一种人明知自己要做的事是不可能实现的，但它还是不改初衷，继续前进，这是有历史使命感的人。”

对于以上三种人，你更欣赏哪一种或哪几种人？请结合材料内容，以学生代表的身份面向本校同学写一篇演讲稿，体现你的认识和思考。

要求：自拟标题，自选角度，确定立意；不要套作，不得抄袭；不得泄露个人信息；不少于800字。

    Once when I was facing a decision that involved high risk, I went to a friend. He looked at me for a moment, and then wrote a sentence containing the best advice I've ever had: be bold and brave — and mighty(强大的)forces will come to your aid.

    Those words made me see clearly that when I had fallen short in the past, it was seldom because I had tried and failed. It was usually because I had let fear of failure stop me from trying at all. On the other hand, whenever I had plunged into deep water, forced by courage or circumstance, I had always been able to swim until I got my feet on the ground again.

    Boldness means a decision to bite off more than you can eat. And there is nothing mysterious about the mighty forces. They are potential powers we possess: energy, skill, sound judgement, creative ideas — even physical strength greater than most of us realize.

    Admittedly, those mighty forces are spiritual ones .But they are more important than physical ones. A college classmate of mine, Tim, was an excellent football player, even though he weighed much less than the average player." In one game I suddenly found myself confronting a huge player, who had nothing but me between him and our goal line," said Tim." I was so frightened that I closed my eyes and desperately threw myself at that guy like a bullet — and stopped him cold.”

    Boldness — a willingness to extend yourself to the extreme—is not one that can be acquired overnight. But it can be taught to children and developed in adults. Confidence builds up. Surely, there will be setbacks(挫折)and disappointments in life; boldness in itself is no guarantee of success. But the person who tries to do something and fails is a lot better off than the person who tries to do nothing and succeeds.

    So, always try to live a little bit beyond your abilities—and you'll find your abilities are greater than you ever dreamed.

    Tulips(郁金香) are the national flower of Iran and Turkey. The European name for the flower is a misuse of the Persian word for turban(头巾), a mistake probably arising in the common Turkish custom of wearing flowers in the folds of the turban. Alternatively, the misuse may have arisen because this eastern flower, when not yet in full bloom, looks like a turban. In Persia, to give a red tulip was to declare your love for someone. The black center of the red tulip was said to represent the lover's heart, burned to a coal by love's passion.

    Originally growing in the Ottoman Empire (present-day Turkey), tulips were imported into Holland in the sixteenth century. When Carolus Clusius wrote the first major book on tulips in 1592, they became so popular that the tulips in his garden were stolen from time to time. As the Dutch Golden Age grew, so did this colorful flower. They were commonly seen in paintings and at festivals. In the mid-seventeenth century, tulips even created the first economics bubble（泡沫经济）, known as “Tulip Mania”. At that time, tulips were so expensive that they were used as money until the market for them crashed.

    Today, Holland is still known for its tulips and other flowers, often sincerely called “the flower shop of the world.” Tulips are planted in great fields of beautiful color, and transform the landscape into a sea of different colors. Tulip festivals are held throughout the country in spring. However, the most well-known tulip festival is organized in the Noordoostpolder, a province in the central Netherlands, each year. Held in the middle of the tulip fields, this flower festival runs from late April to early May. The Dutch people took their love of tulips abroad when they settled, and tulips and tulip festivals are now found in New York and Michigan, where the connection to their Dutch roots is still very strong.

    When Lew Alcindor was 13, and obviously still growing, a group of schools began offering him scholarships (奖学金). The Alcindors decided to send their only child to Power Memorial Academy, a small school on Manhattan's West Side.

    At Power, Alcindor came under the control of Coach Jack Donohue, a strict young an who already gained his fame as one of the best coaches in the city. Donohue brought Alcindor along slowly. As a first-year student, the boy was not able to do much but wave his long skinny arms and shoot a basket now and then. But by the second year, when he was 15 years old and nearly 7 feet tall, Alcindor was quick and skillful enough to make the high school All-American team and to lead Power to an undefeated season.

    From then on he simply got better. Some rival coaches(对方教练) used to take their teams quickly away from the floor before Power warmed up so that their players would not see him any sooner than they had to. Wearing size 16 D shoes and sucking a lollipop(棒棒糖), Alcindor would loosen up by starting his leaping lay-ups(擦板球). Then he would casually shoot the ball with either hand, to the delight of the fans.

    When reporters and photographers began to follow Alcindor closely, Donohue protected his boy firmly. He simply ordered Lew to talk to no member of the press, and this suited Lew fine. He was not comfortable talking to grown-ups, perhaps because he towered over them. Discouraged photographers began following him in secret as though he were an easily-frightened giraffe. Once after ducking into a subway to escape, Alcindor told a friend that it was all becoming like policemen and robbers. “People want you not for yourself,” Donohue warned him, “but because you're a basketball player. Don't forget that.”

, she can meet her desire to see Europe.