脂蛋白各组分中密度最大的是（） A.IDL B.HDL C.VLDL D.LDL E

塑胶以基本结构分为（）、（）两种。

给出在车间"W1”或“W2”工作，并且工资大于3000的职工姓名，正确的命令是（ ）。

A． t=18

B． t=24

C． t=30

D． t=32

（15分）【历史上重大改革回眸】

阅读材料，回答问题。

“书同文”原本是孔子提出的文化理想。孔子的孙子子思作《中庸》，引述孔子的话说：“今天下车同轨，书同文，行同伦，虽有其位，苟无其德，不敢作礼乐焉；虽有其德，苟无其位，亦不敢作礼乐焉。”

“秦始皇帝初兼天下，丞相李斯乃奏同之，罢其不与秦文合者。”……当时主要是小篆和隶书。大约郑重的场合用小篆，一般的情况用隶书。

不过，所谓“书同文”，因秦王朝统治之短暂，并没有真正完成。“书同文”的事业在汉初继续进行，实际上到汉武帝时代才可以说逐步走向定型了。经过了这一转折，汉代的文字和先秦的文字表现出相当大的差异，以致汉时的学者已经难以通晓先秦的文字。

——摘编自张岂之主编《中国历史·秦汉魏晋南北朝卷》

（1）据材料概括“书同文”的历史进程。（6分）

（2）据材料和所学知识，简要评述“书同文”。（9分）

Questions 16～20

It is already common knowledge, on the beaches and in the cafes of mainland Europe, that Americans work too hard—just as it is well known on the other side of the Atlantic that Europeans, above all the French and the Germans, are slackers who could do with a bit of America’s vigorous work ethic.
But a new survey suggests that even those vacations American employees do take are rapidly vanishing, to the extent that 40 per cent of workers questioned at the start of the summer said they had no plans to take any holiday at all for the next six months, more than at any time since the late 1970s.
It is probably mere coincidence that George W. Bush, one of the few Americans who has been known to enjoy a French-style month off during August, cut back his holiday in Texas to a fortnight. But the survey by the Conference Board research group, along with other recent statistics, suggests an epidemic of overwork among ordinary Americans.
A quarter of people employed in the private sector in the US get no paid vacation at all, according to government figures. Unlike almost all other industrialized nations, including Britain, American employers do not have to give paid holidays.
The average American gets a little less than four weeks of paid time off, including public holidays, compared with 6.6 weeks in the UK—where the law requires a minimum of four weeks off for full-time workers—and 7.9weeks for Italy. One study showed that people employed by the US subsidiary of a London-based bank would have to work there for 10 years just to be entitled to the same vacation time as colleagues in Britain who has just started their jobs.
Even when they do take vacations, overworked Americans find it hard to switch off. One in three find not checking their email and voicemail more stressful than working, according to a study by the Travelocity website, while the traumas of travel take their own toll. "We commonly complain we need a vacation from our vacations," the author Po Bronson wrote recently. "We leave home tired; we come back exhausted "
Christian Schneider, a German-born scholar at the Wharton business school in Philadelphia, argues that there is "a tendency to really relax in Europe, to disengage from work. When an American finally does take those few days of vacation per year they are most likely to be in constant contact with the office. "
Mindful that well-rested workers are more productive than burnt-out ones, the accounting firm PricewaterhouseCoopers has started closing all its US offices completely twice a year, for 10 days over Christmas and about five around Independence Day. "We wanted to create an environment where people could walk away and not worry about missing a meeting, a conference call or 300 emails," Barbara Kraft, a partner at the company, told the New York Times.
Left to themselves, Americans fail to take an average of four days of their vacation entitlement—an annual national total of 574 million unclaimed days.

In which of the following countries are employees entitled to more weeks per year for their holidays ______

A. The US.
B. The UK.
C. France.
D. Italy.

下图示意2014年7月5日21时某地区近地面等压线（单位：百帕）形势，读图，完成下列小题。

此时，①②③④四地中吹东北风的是（）

A．①

B．②

C．③

D．④