请根据下面的概念图分析回答问题 (1)图中A代表___________，DNA中

使用二氧化碳灭火器，人应当站在下风侧。

补全对话，每空一词。

A: What bad weather! The wind is blowing 1            with lots of sand. You'd better not go out now.

B: But there's 2            wrong with my computer. I want to ask Uncle Lin to mend it. Wow, what a

    strong sand storm! How 3            will it last?

A: Maybe half a day.

B: Do you know what causes these sandstorms?

A: People have cut down too many trees. But trees can prevent the sand from moving toward the rich

    land and they can also keep water from 4            the earth away.

B: So what can we do to stop the sandstorms?

A: We can 5            more trees and protect our environment.

B: I agree with you.

如何在班级中实施目标管理？

关于妇幼保健三级网络，下列说法不正确的是（）。

A.农村妇幼保健三级网络是以县、乡、村三级保健网的形式组成的

B.城市妇幼卫生基层组织是以区、街道、社区三级网形式存在的

C.乡妇幼保健组织一般设在乡卫生院

D.省级妇幼保健机构负责全省工作的管理和改进

E.县妇幼保健院负责全县的妇幼保健工作

按预测方法的客观性分类：可分为主观性预测方法和客观性预测方法两类。前者主要借助数学模型，后者主要依靠经验判断。这种分类方法的描述是否正确？