问题 单项选择题

为了建立投资约束机制,规范建没单位的行为,建设工程应当按照( )的原则组建项目法人,实行项目法人责任制。

A.委托监理

B.政企分开

C.竞争择优

D.优化政策

答案

参考答案:B

阅读理解

阅读理解。

     When do people decide whether or not they want to become friends? During their first four minutes

together, according to a book by Dr. Leonard Zunin. "Every time you meet someone in a social situation,

give him your undivided attention for four minutes. A lot of people's whole lives would change if they did

just that."

     When we are introduced to new people, we should try to appear friendly and self-confident. In

general, he says, "People like people who like themselves." On the other hand, we should not make the

other person think we are too sure of ourselves.

     Hearing such advice, one might say, "But I'm not a friendly, self-confident person. That's not my

nature. It would be dishonest for me to act that way." In reply, Dr. Zunin would claim that a little practice

can help us feel comfortable about changing our social habits. We can become accustomed to any

changes we choose to make in our personality. "It's like getting used to a new car. It may be unfamiliar at

first, but it goes much better than the old one."

     But isn't it dishonest to give the appearance of friendly self-confidence when we don't actually feel that way? Perhaps, but according to Dr. Zunin, "total honesty" is not always good for social relationships,

especially during the first few minutes of contact. There is a time for everything, and a certain amount of

play-acting may be best for the first few minutes of contact with a stranger. That is not the time to

complain about one's health or to mention faults one finds in other people. It is not the time to tell the

whole truth about one's opinions and impressions.

     The author also declares that interpersonal relations should be taught as a required course in every

school, along with reading, writing, and mathematics. In his opinion, success in life depends mainly on

how we get along with other people. That is at least as important as how much we know.

1. When first introduced to new people, we should __________.

A. be friendly and sure of ourselves regardless of the other people's feeling

B. always tell the whole truth even if it hurts

C. appear friendly and self-confident at least for the first few minutes

D. mention faults we find in the other people

2. According to the author's advice, interpersonal relations _______.

A. should be set as a required course in schools

B. are more important than other courses in school

C. are less important than reading, writing and mathematics

D. is the only key to one's success in life

3. The underlined word 'play-acting' in the fourth paragraph means_______.

A. being totally honest                  

B. being a little dishonest

C. acting out what one feels              

D. acting in a play

4. The best title for the passage could be __________.

A. The Key to Success                  

B. Best Ways to Make Friends

C. Personal Relations                

D. The First Four Minutes

单项选择题

利用生物技术手段借助萤火虫的发光基因,美国弗吉尼亚大学史蒂夫·凯博士的研究小组鉴定出第一个植物生物钟基因。

长期以来,科学家们一直在探索植物周期行为——生理节律的奥秘。虽然这些行为与环境条件有密切关系,如光照长短等,但植物学家一直认为生物钟是植物感知外界条件的决定因素。要鉴定生理节律的生物钟基因,通常有两个关键问题:第一,生理节律能否被检测到;第二,需找到这种生理节律的异步个体。植物光合作用节律常规方法是难以检测的,史蒂夫·凯领导的研究小组借助萤火虫的发光基因,成功地解决了这一难题,

该研究小组把萤火虫的发光基因作为标记基因,使之与一种叫拟南芥的植物的调控光合作用基因相连。待植物萌发后,喷施一种能使萤火虫发光的化合物,结果每当拟南芥的生物钟活化光合作用的时候,幼草便可开始发光。这样就容易地检测出这种植物的光合作用节律。研究人员发现,大多数拟南芥植株的光合作用周期为24小时,但其中有些植株的光合作用的周期介于21~28小时。通过正常植株(光合作用周期为24小时)和突变类型(周期介于21~28小时)的遗传图谱比较,他们发现拟南芥控制光合作用的生物钟基因位于第五染色体上。生物钟基因的发现,有助于科学家深入了解植物是怎样调节其生理节律的。

对科学家鉴定出生物钟基因的前提的分析,理解错误的一项是()

A.科学家已探索出植物生长的规律

B.用生物技术移植萤火虫的发光基因

C.有办法检测植物生理节律

D.找到了被检测植物的异步个体