题干

图为甲、乙两种植物CO2吸收量随光照强度变化的曲线图,下列说法正确的是(  )

A:在C点时,植物细胞中可以产生ATP的细胞器有叶绿体、线粒体和细胞溶胶

B:当光照强度达到E点后,限制乙植物光合作用的主要环境因素有温度和CO2浓度

C:F点时,甲植物光反应几乎停止

D:当平均光照强度在B和D之间,光照和黑暗的时间各为12h,实验前后甲植物中有机物总量将增加

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B

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红叶

    ①秋天的挂号信是故乡的一枚红叶托来的。那叶子虽然失去了夏日的翠绿与鲜活,但千丝万缕如云如织的红晕,仍然显示着生命饱经沧桑而不衰竭的光泽。仔细阅读,总能品出满心满目的沉重。

    ②坐在城市的秋天里,遥祭天边属于红叶的怀想,许多人许多事便在红得烂漫的季节踏歌而来。一缕亮丽而亢奋的情愫,不因岁月的冷雨寒风,历史皱纹一般地印出那些曾经拥有的风景。

    ③那一年,霜早早地落了,童心里飘漾的一湾亮绿,立时被腾起的深色写意所笼罩。伴着满树乞求阳光感激阳光的叶子,我站在无言又无奈的母亲面前,我能说些和做些什么呢?蜂飞蝶舞、扬鞭吆喝的温馨与雄浑,是与眼前的悲怆画面不相协调的。母亲喜欢红叶,常常把红叶一生的辉煌与美丽归结为朴素的“好看”二字。这样的定义虽很肤浅,但原始的美能说明红叶作为一种生命过程所独有的轰轰烈烈的平凡与伟大。正如春风的笑,是为绿遍山野;夏雨的狂,是为挥洒豪气;秋月的眼,是为收获鼓劲;冬雪的吻,是为大地铺上一层不掩饰的晶莹一样,让一组神韵在特定的氛围内展示风情。这种风情有可能过程是短暂的,只要留住搏击的顽强与执著,是能够找到属于生命的隽永的。

    ④然而起风了,灰蒙蒙的天空,一片苍凉。路边的树叶,已经失却了青春的娇艳,痛苦地作着最后的告别;病床上的母亲,泪眼朦胧。看着刚刚绽芽的我,她真的不愿像那一片屈于命运的红叶啊!但是,病魔吞噬生命是与秋风扫落叶一样残酷无情的。母亲仿佛很安详,连最后的遗言,也是让我去拣几片红叶。我跑在童年的秋天里,为母亲拣回了一大把红叶。母亲数着这些红叶,如同数着我可以用月计算的年龄,终于,她的笑永远地印在了那把红叶之上。

    ⑤红叶度过了一个辉煌的时刻,而我的感觉也突然回归到被爱怜所簇拥的晨光里。那是一个夜晚,在严寒即将为大地更换主题时,你踩着松软的泥土走了……而我则踩着落叶向你扑去。

    ⑥我并不企盼一切都会永恒。红叶告别季节,这是自然的法则,就像再坚硬的岩石也注定要风化为泥土一样。造物主在造出万物时,就给了它一个不可超越的毁灭命运。我仍在爱着,就像叶子热恋土地一样,在狂风中不管旋得多高,最终还要投向大地母亲的怀抱。因为,它从枝头走下来,已经有一个归宿在向它招手。我的归宿在母亲亲手为我设计的坐标里。

    ⑦让世界所有的叶子都飞舞吧,那是一颗颗袒露真诚的心哪!

    ⑧天上的红叶一片片/思念到天边/思念到永远……

    ⑨把思想从往事中拽回,虔诚地注视今天的红叶,红叶便是活着的历史。是的,一切都未曾老去,也绝不会老去,只要大自然的秋风刮来,那飞溅的流苏,那童年的云雨星光,那饱蘸生命之美的红叶,便突破时空的界限,染红我遥远而清晰的梦境。

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完形填空

    “How does the yard look?” My father asked, with his eyes shining. I could tell he was eagerly waiting for my 1 “Wonderful!” I replied after I gave it a thorough 2. Then I recited all the changed I had 3in his yard and he smiled contently.

    When I was young, my mother 4in a car accident, leaving my father alone to5their three young daughters. At the beginning, life was not always 6and my younger sisters usually complained. However, Dad always 7us to believe that life was good. Meanwhile, he tried his best to 8that belief.

    In 1972, my dad developed a piece of waste land that had been9on Okaloosa Island. Every year at the first sign of10, he would begin spending countless hours working there to make it be bursting with colors. Through his continuous hard work, the land11turned into a beautiful garden with different types of flowers and other unique plants. While our friends were enjoying their vacation through traveling to different places, we were12working with my dad in his yard, watering the flowers, weeding or cutting off the branches. Sometimes, our friends were envious of our working vacation, and we would 13them. Dad made his yard very14so that it became our vacation paradise during our childhood.

    For so many years, when we were 15, we liked to visit Dad's yard, because it could 16us of Dad's belief. It was Dad and his yard that gave us17that enabled us to survive and18major challenges in life. One day, it shocked us that Dad said he would not 19the yard. Then he explained, “Twenty years ago I decided to start my work in that yard to tell you life is good. Now my work is done.” We were sitting in 20, recalling what we had experienced. Life was good. Dad was right.