华为公司2013年9月30日银行存款日记账的余额为150万元，经核对，未达账项如下；

按募集方式分类，有价证券可以分为（）。

A．公募债券、私募债券 

B．股票、债券 

C．上市证券、非上市证券 

D．政府证券、政府机构证券、公司证券

据报道，进入20世纪以来，几乎每年至少有一种鸟类从地球上消失，造成野生动物灭绝的主要原因是（　　）

A．动物患病

B．人类活动对生态系统的破坏

C．自然灾害的频繁发生

D．天敌过多

短文改错

     Recently, my classmates have had a heated discussion about if we should have optional courses

(选修课) in high schools. Some students were  in favor of optional courses. They say interest is best

teacher and  our spare time will be colorful and meaningful. Students can not only  enlarge their

knowledges but also improve their abilities.  However, others are against the idea, said that optional

courses will take up too much time as well as energy. Besides, some optional courses have something

to do with the College Entrance Examination. They are afraid they'll fall behind their classmates if they

will take optional courses. I'd like to take one or two  of the optional courses, which, I think, will certain

benefit me  lot.

_____________________________________________________________________________

______是描述收入分配差异程度，反映贫富差距的一个重要指标。

A．收入弹性系数

B．恩格尔系数

C．基尼系数

D．消费价格指数

贾府人等往铁槛寺途中经过一农庄，宝玉在拧转纺车时遭到一个丫头的呵斥，众小厮忙断喝拦阻，宝玉却忙丢开手，并陪笑。宝玉身上有什么与众不同的东西吗？说说你的理解。