假期同学们收集作文，我们班有4个小组，每个小组人数相等．每人收集了15篇作文．老

急进性肾小球肾炎临床主要特征是什么

A．早期出现少尿性急性肾功能衰竭为特征

B．主要以急性起病，重症血尿为特征

C．以进行性贫血为特征

D．以高度水肿为特征

E．以高血压脑病为特征

大小圆的直径比是4：3，则小圆和大圆的周长比是______，面积比是______．

语法填空。

     The most common problem that worries all of us today is the fear of insecurity. Life has become so

competitive that every now and then we are struck by the fear of the _1_ (know).   2   every new turn

of events our selfconfidence takes a blow. The  3   (big) challenge before every person today is not to

lose confidence in one's ability.

     There are several reasons that affect a person's selfconfidence. The most important reason is lack

of success. Not being able to    4   (success) affects one's selfconfidence greatly. This is   5   one begins

to doubt his own ability. In many cases one's selfconfidence is low when he feels rejected by society.

For example, a person who loses his job keeps away from other people for fear of    6   (question)

about his work. However, this isn't right. One needs to think along positive lines in spite of failures.

     The challenge lies in not allowing your selfconfidence to decrease.    7   lack of success causes you

to doubt your ability, don't forget to remind yourself that quick success does not last long. Also

remember not to compare yourself with others. These tips will do   8   world of good to your confidence.

In order to be selfconfident, you need to have a lifestyle that is right for you. Create one and live a life

   9   you want to. Leave others to 10  .

在造型要素中，最基本的三个要素是（）。

A、点、线、色彩

B、图形、色彩、形式

C、点、线、面

D、点、线、形式

阅读以下说明，回答下面问题。
【说明】
ADSL是接入Internet的一种宽带技术。下图1.9为一台带网卡的PC机采用ADSL接入Internet的网络结构图。