在建设工程施工阶段,当通过压缩网络计划中关键工作的持续时间来缩短工期时,通常采取的技

题型:多项选择题

问题:

在建设工程施工阶段,当通过压缩网络计划中关键工作的持续时间来缩短工期时,通常采取的技术措施有( )。

A.采用更先进的施工方法

B.增加劳动力和施工机械的数量

C.改进施工工艺和施工技术

D.改善劳动条件

E.采用更先进的施工机械

考点:监理工程师(建设部)建设工程质量、投资、进度控制建设工程质量、投资、进度控制
题型:多项选择题

不属于项目风险识别方法的是( )。

A.生产流程法

B.损失控制法

C.环境分析法

D.组织图分析法

题型:多项选择题

彩色头发基因技术

你能想像一只绿色老鼠的样子吗 科学家最近通过基因变化技术使老鼠长出了绿色的毛,试验的成功让科学家们相信,将相关基因移植入毛囊可以改变毛发的颜色,这意味着对毛囊进行基因变体疗法可能大有作为。

抗癌公司是美国加州圣迭戈的一家生物技术公司,这里的科学家将一种水母基因移植到老鼠的毛囊中,使老鼠长出了在蓝光下呈现荧光绿的毛发。该公司总裁罗伯特•霍夫曼说:“这些毛发之所以是绿色的,是因为其中有荧光绿色的蛋白质。”这种荧光绿蛋白质就是使水母在暗处发绿光的那种基因。霍夫曼将这种水母的基因移入一块剪下的老鼠皮上,他用一种名叫胶原酶的物质将老鼠皮组织软化,胶原酶可使毛囊更容易接受水母的基因,然后将老鼠皮放入培养液中。培养液含有一种腺病毒,这种病毒与平常引起感冒的腺病毒相似。该病毒很快进入老鼠皮上的水母基因细胞中。霍夫曼采取措施使病毒迅速复制,这样病毒细胞就可以将自己携带的基因成分栽入老鼠的细胞中。霍夫曼在显微镜下观察细胞的变化过程,他发现,老鼠皮的毛囊中明显出现了绿色蛋白质的斑点,这是每根毛发生长的基础。此后,这块老鼠皮上80%的地方长出了绿色的毛。然后,霍夫曼将这块长有绿毛的老鼠皮移植到活老鼠缺少毛发的皮肤上,移植的毛发在老鼠身上不断生长,逐渐遍布全身。

目前,该研究最乐观的前景可能就是让灰白头发恢复成黑发。研究人员已通过基因疗法使白老鼠长出了黑色的毛,这对于治疗灰白头发是重大进步。但这种基因变体技术还要在老鼠身上再做几年试验才能用于人类。科学家们认为,一旦人类掌握了关于头发颜色的基因,基因疗法就可以用于美发。黑头发是因为真黑素在发挥作用,红头发和褐色头发也都有其生成色素,但目前还没破解金发的分子构造。一旦科学家们发现了所有决定头发颜色的基因,那么人们就可以随心所欲地改变头发的颜色,只需激活或减少相关基因,而不是通过染色物质。

霍夫曼同时指出:“毛囊是个了不起的工具。”他相信基因工程能使毛囊产生任何形式的蛋白质,比如胰岛素和干扰素(一种免疫系统蛋白质)。小小的毛囊其实是个巨大的工厂。通过基因疗法,毛囊里不仅能长出健康的头发,还有可能承栽某些基因来治疗白化病、糖尿病、癌症等。实际上,把基因疗法用于美发要比治病困难得多。美发需要把头上所有的毛囊都进行处理,而治病只在几个毛囊上进行处理就可以了。 (节选自《环球时报》)

下列理解符合原文意思的一项是()。

A.一种水母身上带有能在暗处发绿光的荧光绿蛋白质,将该蛋白质植入老鼠毛发,就能使之发绿光

B.霍夫曼把一种类似感冒病毒的腺病毒,植入活老鼠缺少毛发的皮肤上并迅速复制,这样就使老鼠皮的毛囊中明显出现绿色蛋白质的斑点

C.霍夫曼采用的基因变体疗法就是通过基因变化技术对老鼠的毛囊进行基因改造,从而改变毛发的颜色

D.科学家们认为,基因疗法能否用于美发,关键在于人类对头发颜色的基因的掌握,如果不能发现所有决定头发颜色的基因,那么人们就很难改变头发的颜色

题型:多项选择题

For some people, the prospect of starting college, especially going away to school, is scary. It’s probably the first time that you’ll be totally responsible for your own schedule. What if you intend to go to college but just don’t feel ready to start yet-for whatever reason-and you don’t want to take on a full-time job after graduation? You might want to take a year off to pause and regroup. This practice is common in some countries, like the United Kingdom, where it’s called a “gapyear”.

Taking time off doesn’t mean you should ignore the idea of applying to college. In fact, you may want to consider making your college plans before you become involved in other things, especially if you’ll be travelling. Apply to schools and make your choice, then ask for a deferred admission. Rachel took a year off and worked in New York City between college and medical school. She says that she had to be extremely well organized about planning for medical school so she didn’t miss any of her deadlines. “Not only did I have to apply to schools and make plans to take my MCAT exams, I also had to make all my living arrangements and other plans for my year off!”

Even if you decide not to apply to college, it can be a great idea to take a year to do something you may not have an opportunity to do again. Lots of volunteer organizations would welcome your time and energy and would provide you with a wonderful learning experience. If you take a year off you will learn some great life skills-like living on a tight budget! If you take a year off you’ll pay your way while you are traveling or doing volunteer work.

小题1:What’s the best title of the passage?

A.Taking Time Off

B.Disadvantages of a “Gap Year”

C.Plans after Graduation

D.How to Apply to College小题2:Going on a “gap year” means _____.

A.asking for a year’s leave to rest at home

B.taking a year off to pause and regroup

C.ignoring the idea of applying to college

D.travelling around the world before going to college小题3:The author takes Rachel for example in the second paragraph in order to show _____.

A.it’s not easy to take a year off

B.it’s interesting to take a “gap year”

C.what taking time off is like

D.how to apply to schools小题4:Which of the following is NOT the benefit of taking a year off?

A.You’ll learn some great life skills.

B.You’ll make full preparation for starting college.

C.You’ll earn much money by taking on a full-time job.

D.You’ll gain a wonderful learning experience by joining in a volunteer organization.

题型:多项选择题

急性肾小球肾炎的病理类型

A.微小病变肾病

B.新月体性肾小球肾炎

C.硬化性肾小球肾炎

D.系膜增生性肾小球肾炎

E.毛细血管内增生性肾小球肾炎

题型:多项选择题

简述诽谤罪与侮辱罪的区别。

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