题目

绿色植物光合作用的影响因素 是多方面的，其外界因素有光照强度、 CO2的含量，温度等；其内部因素有酶的 活性、色素的数量、五碳化合物的含量等。 请根据右图影响光合作用的因素分析：    （1）如果右图横坐标代表光照强度，其影 响光合速率主要是影响__________阶 段，若阴生植物的光合作用曲线为 c，则阳生植物的光合作用曲线最可能 是________。    （2）如果右图横坐标代表温度，温度主要通过影响___________来影响光合速率。若d曲线表示干物填写句子补全对话： 　　(Kate comes in the shop. The shopkeeper receives her.) 　　S: Good morning! (1) ? 　　K: I'd like a jacket for myself. 　　S: (2) ? 　　K: A yellow one. 　　S: (**3) ? 　　K: I'd like a woolen one. A woolen jacket is more beautiful than a cotton one, I think. Please pass me the one on the left. 　　S: Here you are, madam. You'd better try it on. 　　K: Oh, it's nice for me. (*4) ? 　　S: It costs eighty dollars. 　　K: How expensive it is! (**5) ? 　　S: Yes, we do. But the cheap jackets are all cotton. Of course, they aren't so nice as the woolen ones. 　　K: I'm afraid I haven't brought enough money with me. 　　S: (6) . We'll keep the yellow woolen jacket for you for a day. You can come to buy it tomorrow. 　　K: It's very kind of you! 　　S: No trouble at all. 1．________________________________________________ 2．________________________________________________ 3．________________________________________________ 4．________________________________________________ 5．________________________________________________ 6．________________________________________________