某非环状多肽，分子式为C₂₁H_xO_yN₄S₂（无二硫键）。已知该多肽是由下列氨基酸中的几种作为原料合成的。苯丙氨酸(C₉H₁₁NO₂)、天冬氨酸(C₄H₇NO₄)、丙氨酸(C₃H₇NO₂)、亮氨酸(C₆H₁₃NO₂)、半胱氨酸(C₃H₇NO₂S)。下列有关该多肽的叙述正确的是

“知彼知已者，百战不殆”的军事格言，是哪个军事家的名言（　　）

语法填空

    Green is not always referring to the color. In some cases, it is the term used for environmental____(friend). If you've been expecting to replace your furniture, consider ____(go) green because green furniture offers many benefits. Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture.

    First, green furniture isn't harmful____your health. Also its making process doesn't cause damage to the environment in any way. Besides, by using eco-friendly ____(product), you prevent global warming to some degree in your own way.

    The materials____are used in furniture are what make them green. Materials can be good for the environment ____ because they are renewable resources or they are all ____(nature). A lack of chemicals in furniture also____(mean) it is a better choice for the environment. It may be hard to imagine that a sofa or a table could actually be____green product, but they really can be depending on what they ____(make)of.

    Therefore, when you want to hunt for the perfect green furniture, you should choose the green materials.

如图表示在植物体内的某些生理过程．请按要求回答：

已知一次函数的图象过点（3，5）与点（﹣4，﹣9），求这个一次函数的解析式．