下列市场调查的类型中，调查深度最大的是（）。A、预测性调查 B、因果关系调查 C、描

确定权重的常用方法有（）。

A.特尔菲测定法

B.因素成对比较法

C.层次分析法

D.总分频率曲线法

E.数理统计法

请阅读下面的短文，然后按要求写一篇150 词左右的英语短文。

Two friends have an argument that breaks up their friendship forever, even though neither one can remember how the whole thing got started. Such sad events happen over and over in high schools across the country. In fact, according to an official report on youth violence, "In our country today, the greatest threat to the lives of children and adolescents is not disease or starvation or abandonment, but the terrible reality of violence". Given that this is the case, why aren't students taught to manage conflicts the way they are taught to solve math problems, or stay physically fit?

A report on violence among high school students indicates that most violent incidents between students begin with daily small matters such as a relatively minor insult (侮辱). For example, a fight could start over the fact that one student eats a peanut butter sandwich each lunchtime. Laughter over the sandwich can lead to insults, which in turn can lead to violence. The problem isn't in the sandwich, but in the way students deal with the conflict.

There will always be conflicts in schools, but that doesn't mean there needs to be violence. Learning to resolve（化解）conflicts can help students deal with friends, teachers, parents, bosses, and coworkers. In that way, conflict resolution is a basic life skill that should be taught in schools across the country.

【写作内容】

1.以约30词概括上文的主要内容。

2.以约120词对“中学生产生矛盾或冲突”的现象进行议论，内容包括：

1) 中学生产生矛盾或冲突的原因；

2 ) 描述一次你和你的同学产生矛盾的经历（包括起因，经过和结果）；

3) 谈谈如何正确解决和同学的矛盾。

【写作要求】

1.作文中可以使用亲身经历或虚构的故事，也可以参照阅读材料的内容，但不得直接引用原文中的句子。

2.作文中不能出现真实姓名和学校名称。

【评分标准】 概括准确，语言规范，内容合适，语篇连贯。

在田纳西河流域的治理开发中，农业发展注重了

A．以种植业为主

B．以畜牧业为主

C．以渔业为主

D．农林牧渔综合发展

当细菌通过菌毛相互接触时，质粒DNA可从一个细菌转移至另一个细菌，这种类型的DNA转移称为

A．转化作用

B．转导作用

C．转座

D．接合作用