维生素E（） A.硫色素反应 B.碱性条件下的分解反应 C.与亚硝基铁氰化钠反应 D

统计的基本任务是提供有关经济社会发展情况的统计意见，实行统计监督。（）

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.

由于喉或气管发生阻塞，患者用力呼吸，气流通过喉或气管狭窄处发出的特殊声音（）。

A.声音嘶哑

B.吸气性呼吸困难

C.喉喘鸣

D.咯血

E.呕血

建设工程项目竣工工程质量验收时，对于涉及结构安全和功能的主要分部分项工程应进行( )。

A．外观检查

B．见证取样检测

C．剥露检验

D．抽样检测

往含0.2 mol NaOH和0.1 mol Ba(OH)₂的溶液中持续稳定地通入CO₂气体，当通入气体的体积为6.72 L(标准状况下)时立即停止，则在这一过程中，溶液中离子数目和通入CO₂气体的体积关系正确的图像是(气体的溶解忽略不计)（  ）