下列说法错误的是（） A.基线是计算三角形边长的起始数据 B.小三角测量内业计算的最

已知函数f（x）=x²ln|x|，

（Ⅰ）判断函数f（x）的奇偶性；

（Ⅱ）求函数f（x）的单调区间．

某核电厂为防止核爆炸造成巨额经济损失，向甲保险公司投保了为期1年的足额财产保险，保险金额为10亿元。核电厂担心一旦发生核爆炸，甲公司无力理赔，又于1个月后向乙保险公司投保了为期两年的足额财产保险，并通知甲公司。之后不久，核电厂因职工操作不慎发生核爆炸。本案的处理结果应为（）。

A.核电厂与乙公司签订的保险合同无效，由甲公司赔偿10亿元

B.两个保险合同均为有效合同，甲乙两公司各赔偿10亿元

C.两个保险合同均为有效合同，甲乙两公司各赔偿5亿元

D.核电厂与甲公司签订的保险合同无效，由乙公司赔偿10亿元

中华人民共和国成立的历史意义是什么？（5分）

English is the native or official language of one-fifth of the land area of the world. It is spoken in North America, Great Britain, Australia, and New Zealand. In South Africa and India it is one of the official languages.

More people study English than any other language. In many countries, the textbooks in universities are in English. Many university classes are taught in English even though the native language is not English.

English is the language of international communication. It is the language of international business, research, and science. More than three-fourths of the world’s mail is written in English. More than half of the scientific research journals are in English. Most other languages have borrowed many English words.

Why did English become the international language? In the middle of the nineteenth century, French was the international language. The Britain became very powerful in the world. England started colonies in North America and India in the seventeenth century. By 1900 England also had colonies in other parts of Asia, Africa and the South Pacific. The people in the colonies had to use English. Slowly it became more important than French internationally. After the Second World War, the United States became very powerful, and even more people began to learn English.

Is English a good international language? It has more words than any other language. The grammar is simpler than in other major languages. However, English spelling is difficult. Foreigners all have trouble spelling English. So do native speakers!

Since 1880, people have invented over fifty artificial (not natural) languages. No one speaks them as a native language. However, none of them has ever become popular. Some people don’t want to study English, but it is the international language. There is no way to change that now.

小题1:English is the native language of ______.

A．South Africa

B．Australia

C．All of Canada

D．Malaysia小题2:England started a colony in India in the ______.

A．1600s

B．1800s

C．1700s

D．1900s小题3:Which of the following is NOT TRUE according to the text?

A．The English grammar is simple in general.

B．It has a good vocabulary.

C．Its pronunciation sounds pleasant.

D．It is difficult to spell correctly.小题4:The author concludes that____.

A．it is necessary to invent a new language.

B．English is the international language whether you like it or not

C．English is much better than other languages

D．English should be spoken all over the world

维护统治秩序与惩罚犯罪的客观需要，是警察产生的( )。

A．阶级条件
B．社会条件
C．政治条件
D．经济条件