如图表示人体细胞内或细胞间的某些信息传递机制的模式图，图中箭头表示信息传递的（　　）

人体内磷脂的重要生理作用是（　　）

我国进入改革开放和社会主义建设新时期的标志是下列哪一次会议的召开（　　）

   All students need to have good study habits(习惯). When you have good study habits, you can learn things quickly. You also remember them easily. Do you like to study in the living-room? This is not a good place because it is usuallytoo noisy. You need to study in a quiet place, like your bedroom. A quiet place will help you only think about one thing, and you will learn better. Before you begin to study, do not forget to clean your desk. A good desk light is important, too. You are feeling tired easily if there is not enough(足够的) light.

填关联词，并指出关联词的类型。

____我们赵国武有廉颇，文有蔺相如，____秦王不敢侵犯我国。类型：____