关于明代内阁，下列表述正确的是 A明太祖罢除丞相职务，设内阁制 B.内阁成员的地

什么是离子交换吸附？离子交换剂按照功能团的性质可分为哪几类？

It is pretty much a one-way street. While it may be common for university researchers to try their luck in the commercial world, there is very little traffic in the opposite direction. Pay has always been the biggest deterrent, as people with families often feel they cannot afford the drop in salary when moving to a university job. For some industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations.

Helen Lee took a 70% cut in salary when she moved from a senior post in Abbott Laboratories to a medical department at the University of Cambridge. Her main reason for returning to academia mid-career was to take advantage of the greater freedom to choose research questions. Some areas of inquiry have few prospects of a commercial return, and Lee’s is one of them.

The impact of a salary cut is probably less severe for a scientist in the early stages of a career. Guy Grant, now a research associate at the Unilever Centre for Molecular Informatics at the University of Cambridge, spent two years working for a pharmaceutical (制药的) company before returning to university as a post-doctoral researcher. He took a 30% salary cut but felt it worthwhile for the greater intellectual opportunities.

Higher up the ladder, where a pay cut is usually more significant, the demand for scientists with a wealth of experience in industry is forcing universities to make the transition (转换) to academia more attractive, according to Lee. Industrial scientists tend to receive training that academics do not, such as how to build a multidisciplinary team, manage budgets and negotiate contracts. They are also well placed to bring something extra to the teaching side of an academic role that will help students get a job when they graduate, says Lee, perhaps experience in manufacturing practice or product development. “Only a small number of undergraduates will continue in an academic career. So someone leaving university who already has the skills needed to work in an industrial lab has far more potential in the job market than someone who has spent all their time on a narrow research project.”

小题1:By “a one-way street” (Line 1, Para. 1), the author means ________.

A．university researchers know little about the commercial world

B．there is little exchange between industry and academia

C．few industrial scientists would quit to work in a university

D．few university professors are willing to do industrial research小题2:What was Helen Lee’s major consideration when she changed her job in the middle of her career?

A．Flexible work hours.

B．Her research interests.

C．Her preference for the lifestyle on campus.

D．Prospects of academic accomplishments.小题3:Guy Grant chose to work as a researcher at Cambridge in order to ________.

A．do financially more rewarding work

B．raise his status in the academic world

C．enrich his experience in medical research

D．exploit better intellectual opportunities小题4:What contribution can industrial scientists make when they come to teach in a university?

A．Increase its graduates’ competitiveness in the job market.

B．Develop its students’ potential in research.

C．Help it to obtain financial support from industry.

D．Gear its research towards practical applications.

在一次化学研究性学习实验中，某研究小组学生研究分析某两瓶无标签的试剂，一瓶是固体，另一瓶是液体，取少量两种试剂在试管中混合，立即产生一种无色无味的气体。现请你对此气体开展一系列探究，并完成下列实验报告。

（1）著名的科学家牛顿有句名言：没有大胆的猜想，便不可能有伟大的发现和发明。没有猜想的探究是无根之木、无源之水。

①此气体可能是什么物质？（只写出其中可能的一种）请你设计验证它的实验方案填入下表

产生此气体的化学方程式可能是___________________。

②如你想制取少量该气体，可选用图下图中的__________发生装置（填对应装置序号）。收集该气体可选用D中的某一个装置。

③若用图下图装置来收集该气体，则气体由__________端（填“a”或“b”）导入。

（2）猜想此无色气体还有无可能是另一种气体，如果有，请写出产生它的化学方程式___________________（只需写一种）。

依据《生产安全事故报告和调查处理条例》的规定，事故调查组组长由负责事故调查的( )指定。事故调查组组长主持事故调查组的工作。

A．人民政府

B．安全生产监督管理部门

C．人民检察院

D．工会

下列属于防静电措施的是（）。

A.接地

B.增湿

C.抗静电添加剂的

D.静电中和器