题干

生态平衡是指生态系统中的各种生物(      )

A:数量不改变

B:比例不改变

C:数量和所占比例相对平衡

D:数量暂时平衡

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C

同类题1

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    John Blanchard stood up from the bench, straightened his Army uniform, and studied the crowd of people making their way through Grand Central Station. He looked for the girl whose heart he knew, but whose face he didn't, the girl with the rose.

    His interest in her had begun thirteen months before in a Florida library. Taking a book off the shelf he found himself intrigued, not with the words of the book, but with the notes penciled in the margin. The soft handwriting reflected a thoughtful soul and insightful mind. In the front of the book, he discovered the previous owner's name, Miss Hollis Maynell. With time and effort he located her address. She lived in New York City. He wrote her a letter introducing himself and inviting her to correspond. The next day he was shipped overseas for service in World War II.

    During the next year and one month the two grew to know each other through the mail. Each letter was a seed falling on a fertile heart. A romance was starting Blanchard requested a photograph, but she refused. She felt that if he really cared, it wouldn't matter what she looked like.

    When the day finally came for him to return from Europe, they scheduled their first meeting —7:00 PM at the Grand Central Station in New York. “You'll recognize me,” she wrote, “by the red rose I'll be wearing on my lapel.” So at 7:00 he was in the station looking for a girl whose heart he loved, but whose face he'd never seen.

    I'll let Mr. Blanchard tell you what happened: A young woman was coming toward me, her figure long and slim. Her blonde hair lay back in curls from her delicate ears; her eyes were blue as flowers. Her lips and chin had a gentle firmness, and in her pale green suit she was like springtime come alive. I stared at her, entirely forgetting to notice that she was not wearing a rose. As I moved, a small, attractive smile curved her lips. “Going my way sailor?” she murmured.

    Almost uncontrollably I made one step closer to her, and then I saw Hollis Maynell. She was standing almost directly behind the girl. A woman well past 40, she had graying hair tucked under a worn hat. She was more than plump, her thick-ankled feet thrust into low-heeled shoes. The girl in the green suit was walking quickly away. I felt as though I was split in two, so keen was my desire to follow her, and yet so deep was my longing for the woman whose spirit had truly companioned me and upheld my own.

    And there she stood. Her pale, plump face was gentle and sensible, her gray eyes had a warm and kindly twinkle. I did not hesitate. My fingers gripped the small worn blue leather copy of the book that was to identify(识别)me to her.

    This would not be love, but it would be something precious, something perhaps even better than love, a friendship for which I had been and must ever be grateful. I squared my shoulders and saluted and held out the book to the woman, even though while I spoke I felt choked(哽咽)by the bitterness (痛苦)of my disappointment. "I'm Lieutenant (中尉)John Blanchard, and you must be Miss Maynell. I am so glad you could meet me; may I take you to dinner?"

    The woman's face broadened into a tolerant smile. "I don't know what this is about, son," she answered, "but the young lady in the green suit who just went by, she begged me to wear this rose on my coat. And she said if you were to ask me out to dinner, I should go and tell you that she is waiting for you in the big restaurant across the street. She said it was some kind of test!"

    It's not difficult to understand and admire Miss Maynell's wisdom. The true nature of a heart is seen in its response to the unattractive. "Tell me whom you love," Houssaye wrote, "And I will tell you who you are."

同类题4

阅读下文,回答相关问题。

                                                                                                              张   仪
       张仪者,魏人也。始尝与苏秦俱事鬼谷先生,学术,苏秦自以不及张仪。张仪已学,游说诸侯。尝从楚相饮,已而楚相亡璧,门下意张仪,曰:“仪贫无行,必此盗相君之璧。”共执张仪,掠笞数百,不服,释之。其妻曰:“子毋读书游说,安得此辱乎?”张仪谓其妻曰:“视吾舌尚在不?”其妻笑曰:“舌在也。”仪曰:“足矣。”
       苏秦已说赵王而得相约从亲,然恐秦之攻诸侯,败约后负,念莫可使用于秦者,乃使人微感张仪曰:“子始与苏秦善,今秦已当路,子何不往游,以求通子之愿?”张仪于是之赵,上谒求见苏秦。苏秦乃诫门下人不为通,又使不得去者数日。已而见之,坐之堂下,赐仆妾之食。因而数让之曰:“以子之材能,乃自令困辱至此。吾宁不能言而富贵子,子不足收也。”谢去之。张仪之来也,自以为故人,求益,反见辱,怒,念诸侯莫可事,独秦能苦赵,乃遂入秦。

                                                                                                                                      (《史记·张仪列传》节选)