如何理解表情适度？

目前，香港已超越东京与伦敦，成为全球第三大融资中心，在过去十年为内地企业融资达1 100亿美元。这表明

①香港回归后经济获得长足发展

②香港回归促进了祖国内地经济的发展

③香港的经济制度比东京、伦敦优越

④日益强大的祖国是香港保持繁荣稳定的坚强后盾[     ]

A．①②③④

B．①②③

C．②③④

D．①②④

D

Although women lead healthier, longer lives, the cruel perception that they reach their sell-by date and become “old” sooner than men is widespread in the workplace, research shows.

A survey of more than 2,600 managers and personnel professionals showed that age discrimination is not only common in the workplace, but is full of inconsistencies(矛盾). Six in ten managers thought that they had suffered from age discrimination——usually because they were turned down for a job for being too old or too young. Yet more than a fifth admitted that they used age as a condition when they employ new workers.

Although the survey found widespread agreement that older workers were better than younger colleagues when it came to reliability, commitment, loyalty and customer service, these qualities were not necessarily considered to be worthy of advancement. More than half of respondents believed that workers between 30 and 39 were the most likely to be advanced in their company, with only 2 per cent citing (引证)50-year-olds or above.

Dianah Worman of the Chartered Institute of Personnel and Development said that there was anecdotal evidence that people were considered old at different ages in different sectors. “We heard of one man working in IT who said he was considered too old by the age of 28,”she said.“There was no evidence to suggest that older workers were less valuable to companies than younger workers, in fact the opposite was often true because older workers often brought experience.” she added.

The findings also suggested that the Government’s ideas on age in the workforce may also be out of step with reality.

68. The text is mainly about ______.

A. the government’s idea on age in workforce 

B. age discrimination in the workforce

C. the people who find work            

D. the discussion about who is worth promoting

69. The underlined word “sell-by date” in paragraph 1 probably refers to______.

A. the age when they retire   

B. the age when they should be promoted

C. the date on which they’re sold 

D. the date when they sell goods

70. The writer’s purpose in writing the text is to ______.

A. tell the government to employ older workers 

B. criticize managers who treat workers unfairly

C. report the findings of a survey    

D. show he objects to age discrimination

下面哪个有关核仁的描述是错误的：（）

A、核仁的主要功能之一是参与核糖体的生物合成

B、rDNA定位于核仁区内；

C、细胞在G2期，核仁消失

D、细胞在M期末和S期重新组织核仁

概括地说，知识产权管理就是对知识产权的工作加以（），使其发展符合组织目标的活动和过程。

A、控制

B、计划

C、组织

D、协调

局部排气净化系统的组成