中新网2012年6月13日电综合报，美国总统奥巴马和共和党总统候选人罗姆尼为选战进行“口水战”，罗姆尼12日抓住奥巴马就美国私营部门的言论不放，攻击奥巴马并非一时口误，而是脱离现实，不识民间疾苦。对此，以下不能说明的是   

A．两党本质上都代表资产阶级的利益

B．两党之间存在着不可调和的矛盾

C．两党所代表的利益集团不同

D．两党对垒，交替执政是美国共和政体的一大特色

短文改错（共10小题；每个1.5分，满分15分）

We are all busy talk about and using the Internetwhich set up in the 1960s. At first, the Internet wasonly used by the government, but in early 1970s,the universities, hospitals and banks were allowed touse it, too. Otherwise, computers were still very expensiveand the Internet was difficult to use it. By thestart of the 1990s, computers become cheaper and easier.Today it is easily to get on-line and it is saidthat millions of people use the Internet every day.Send e-mail is more and more popular among students.It has now become one of the most important parts of people’s life.