什么是单个形象？

分析和综合的统一是辩证思维的重要准则。（）就是找主要矛盾，找矛盾的双方并明确各自的地位，或者把整体分解成局部，将诸多矛盾各个击破。

A.整体分解方法

B.特殊分析法

C.辩证思维分析法

D.分析的方法

［1］Five years ago, David Smith wore an expensive suit to work every day. “I was a clothes addict”. He jokes. “I used to carry a fresh suit to work with me so I could change if my clothes got wrinkled”. Today David wears casual clothes—khaki pants and sports shirt to the office. He hardly ever wears a necktie. “I’m working harder than ever”. David says, “And I need to feel comfortable”.

[ 2 ]More and more companies are allowing their office workers to         in the United States. The change from formal to casual office wear has been gradual. In the early 1990s, many companies allowed their employees to wear casual clothes on Friday. This became known as “dress-down Friday” or “casual Friday”. “What started out as an extra one-day-a-week benefit for employees has really become an everyday thing.” said business consultant Maisly Jones.

[ 3 ]Why have so many companies started allowing their employees to wear casual clothes? One reason is that it’s easier for a company to attract new employees if it has a casual dress code. “Many young people don’t want to dress up for work”, says the owner of a software company, “So it’s hard to hire people if you have a conservative dress code”. Another reason is that people seem happier and more productive when they are wearing comfortable clothes. In a study 85 percent of employers said that they believe that casual dress improves employees’ motivation. Only 4 percent of employers said that casual dress has a negative influence on productivity. Supporters of casual office wear also argue that a casual dress code helps them save money. “Suits are expensive, if you have to wear one every day”, one person said, “For the same amount of money, you can buy a lot more casual clothes”.

小题1:Why does David Smith wear casual clothes now? (no more than 8 words)

­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­_______________________________________________________________________________

小题2:List three advantages of casual office wear according to the text? (no more than 10 words)

①______________________________________________________________________________

②______________________________________________________________________________

③______________________________________________________________________________

小题3:Fill in the blank in Paragraph 2 with proper words. (no more than 6 words)

_______________________________________________________________________________

小题4:What does it mean by a conservative dress code? (no more than 10 words)

_______________________________________________________________________________

小题5:What’s the main idea of Paragraph 3? (no more than 18 words)

_______________________________________________________________________________

二尖瓣狭窄最主要的体征是（）

A.口唇发绀

B.主动脉瓣区第二心音亢进

C.心尖部收缩期吹风样杂音

D.严重心律失常

E.心尖部舒张期隆隆样杂音

对于上市公司而言，有分红的企业才能发行新的股票。可是，如果一个企业有分红，那它就不需要融资。如果它需要融资，就没有办法分红。

如果以上陈述为真，以下哪项陈述不可能假（）。

A．一个上市公司不需要融资，或者不是有分红的企业。

B．一个上市公司需要融资，或者是没有分红的企业。

C．一个上市公司不需要发行新股票，或者不是有分红的企业。

D．一个上市公司融资的唯一渠道是发行新股票。

汽蚀是由于水泵入口水的压力等于甚至低于该处水温对应的饱和压力。