题干

已知函数 f(x)=−
x
(
1
+
l
n
x
)
x
1
,若f(x)>k(k∈Z)对任意x>1恒成立,则整数k的最大值为____.
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    In the 1600's when the Spanish moved into what later was to become the southwestern United States, they came across the ancestors of the modern-day Pueblo, Hopi, and Zuni peoples. These ancestors, known variously as the basket makers, the Ancient ones, had lived in the area for at least 2000 years. They were an advanced agricultura people who used irrigation to help grow their drops.

    The Anasazi lived in houses constructed of earth and wood. Anasazi houses were originally built underground and were entered from the roof. But around the year 700 A. D., the Anasazi began to build their homes above ground and join them together into multistoried complexes, which the Spanish called villages. Separate underground rooms in these villages—known as kivas or holy places—were set aside for religious ceremonies. Each kiva had a fireplace and a hole that was believed to lead to the underworld. The largest villages had five stories and more than 800 rooms.

    The Anasazi family was ruled by women. The sacred objects of the family were under the control of the oldest female, but the actual ceremonies were conducted by her brother or son. Women owned the rooms in the village and the crops, once they were harvested. While still growing, crops belonged to the men who, in contrast to most other Native American groups, planted them. The women made baskets and pottery; the men wove cloth and made jewelry.

    Each village had two chiefs. The village chief dealt with land arguments and religious affairs. The war chief led the men in fighting during occasional conflicts that broke out with neithboring villages and directed the men in commnity building projects. The political and social organization of the Anasazi made it almost impossible for outer groups to conquer them.

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Canada Day

                                                                  

                                                                                                                              

      Since 1982, July 1st has been officially known as Canada Day. Canadians of all ages take part in this festival across the country.
  Canada Day is the year's biggest national party. In many towns and cities, the government organizes a lot of events, often outdoors. These include parades(游行), concerts, festivals, firework displays and ceremonies for new Canadian citizens(公民). The celebrations often have a patriotic mood. Canada's national flag, a symbol for Canada Day, can be seen everywhere and a lot of people paint their faces red and white, which are Canada's national colors. The celebrations in Ottawa, Canada's capital city, are especially grand and exciting.
  In the province of Quebec, many home rentals(租赁)start on July 1st and last for exactly one year, and many people in Quebec spend Canada Day moving from one house to another. So in Quebec, Canada Day is also known as Moving Day.
  Many organizations, businesses and stores are closed this day. Only some bookstores, ho spitals and gas stations may be open. Post offices are closed, too. As Canada Day falls in the Canadian summer holiday period, all schools are closed as well. In some areas, special services are provided for large events. The concerts, parades and festivals may cause some traffic jams.