题干

下列是四幅关于光合作用和细胞呼吸的图,有关叙述中正确的是           (   )

A:甲图中氧气浓度为a时,无氧呼吸与有氧呼吸的强度相同

B:乙图中如果再提高CO2浓度,则b点一定上移

C:丙图中,温度为t4℃时,植物净光合作用最大

D:丁图代表两类色素的吸收光谱,则e代表类胡萝素

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D

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    She looked up at me sadly, her pain unbearable obvious. I 1her as she swam silently around the small pool, surrounded by people she didn't know. The top left corner of her yellow shell was 2 and her flippers(鳍状肢)were filled with cuts and scars. Then she swam slowly to others.

    I couldn't help but think that these3 creatures looked as though they were war heroes wounded in battle, but they weren't. They were just a group of innocent sea turtles that had been injured by4 humans.

    Earlier that day, our group of forty high school students had learned that those endangered sea turtles were being 5all the time6water pollution, litter, and careless boaters and fishermen. We were taught how to 7 the deaths and injuries of this species and to encourage others to conserve our ocean life and environment.

    I had always been conscious of the damage our environment was suffering8I had never truly been given the opportunity to 9the devastating(毁灭性的)effects of environmental destruction until I observed that 10 seeing a picture or movie of these animals cannot truly capture the11 on their faces. Now that I have witnessed the12caused by the pollution and people's carelessness. I try to encourage my peers to 13 their daily habits to 14the environment by recycling, conserving water and energy, or15 time and money to help save endangered animals. I stress to them that we need to start saving our environment now16it's too late. We must fight for those creatures that cannot17for themselves because we have only one world to live in and one18 to save it. Now I will always be that person19that ice cream wrapper flying crazily in the wind just because I hate the thought of even one piece of20on the ground.