已知：如图，∠EAD=∠DCF，要得到AB∥CD，则需要的条件____（填一个你认为正确的条件即可）

图1表示是将A、B两种植物的叶片分别放置在相同的密闭小室中，给予一定的光照，利用红外测量仪每隔5min测定小室中的CO₂浓度．图2表示给予不同强度的光照，测定A、B两种植物叶片的CO₂吸收量和CO₂释放量（注：实验中所用的A、B两种植物叶片叶面积相等，且实验都在相同且适宜的温度下进行，忽略光照对呼吸作用的影响）

请据图分析回答：

（1）由图1分析可知，A、B植物叶片的光合作用强度受____ 的影响．从实验开始到10min这段时间内，A植物叶片干重的变化趋势是____．

（2）若A植物在第5min时，光照突然降低而其他条件不变，三碳化合物合成速率将____ ．

（3）在第25﹣40min期间，两个密闭小室内CO₂含量相对稳定的原因是____ ．从实验开始到第40min这一阶段，A植物积累的有机物量比B植物要____ 

（4）根据2，当光照强度为c klx时，A植物叶片中叶绿体吸收CO₂的速率是____ mg/m²•h，一昼夜中B植物增加的葡萄糖为____  mg/m²（设每日光照12小时，保留二位小数）．

    My nephew's 10-year-old son came for a visit one hot, July weekend. I persuaded him to 1 inside and joined him in a game. After 2 for an hour, I suggested that we relax for a while. I 3 my favorite chair to let my neck relax. He left the room and I was catching a few enjoyable4 of peace.

    “Look, Alice,” he said excitedly as he 5 over to the chair where I was sitting. “I found a kite. Could we go outside and 6 it?” Looking out of a nearby window, I noticed it was 7 outside. “I'm sorry. Tripper,” I said, sad to see his 8 expression. “The wind is not 9today. The kite won't fly.”

    The 1010-year-old boy replied, “I think it's windy enough. I can get it to fly,” he answered 11he hurried out to the back door.

    He ran back and forth, as 12as his ten-year-old legs would carry him, looking back 13 at the kite behind. After about ten minutes of unsuccessful trying, he came back in.

    I asked, “How did it 14?” “Fine,” he said, not wanting to admit (承认) the failure. “I got it to fly some.”15 I heard him say secretly, “I guess I'll have to wait for the 16”

    At that moment I heard another voice speak to my17“Alice, sometimes you are just like that. You want to do it your way 18waiting for the wind.”

    And the voice was 19. We usually want to use our own efforts to 20what we want to do. We must learn how to make use of “the wind”in the first place!