下列叙述中正确的是( ) A．程序执行的效率与数据的存储结构密切相关 B．程序执

缩写句子。    

(1)他有一个花钱如流水而且很懒惰的儿子。 

    _____________________________________________________

(2)被汗水浸透了的洗得发白的军衣，紧裹着他那健壮而又匀称的身躯。

    ______________________________________________________________

请按照下列步骤进行：

①任意写一个三位数，百位数字比个位数字大2；

②交换百位数字与个位数字，得到另一个三位数；

③用上述中的一个较大的三位数减去较小的一个三位数，所得差为三位数；

④交换差的百位数字与个位数字之后又得到一个三位数；

⑤把这两个三位数相加。

结果是多少？用不同的三位数再做几次，结果都是一样吗？你能解释其中的原因吗？

One of the greatest contributors to the first Oxford English Dictionary was also one of its most unusual. In 1879, Oxford University in England asked Prof. James Murray to serve as editor for what was to be the most ambitious dictionary in the history of the English language. It would include every English word possible and would give not only the definition but also the history of the word and quotations(引文) showing how it was used.

This was a huge task, so Murray had to find volunteers from Britain, the United States, and the British colonies to search every newspaper, magazine, and book ever written in English. Hundreds of volunteers responded, including William Chester Minor. Dr. Minor was an American surgeon who had served in the Civil War and was now living in England. He gave his address as “Broadmoor, Crowthorne, Berkshire,” 50 miles from Oxford.

Minor joined the army of volunteers sending words and quotations to Murray. Over the next 17 years, he became one of the staff’s most valued contributors.

But he was also a mystery. In spite of many invitations, he would always decline to visit Oxford. So in 1897, Murray finally decided to travel to Crowthorne himself. When he arrived, he found Minor locked in a book-lined cell at the Broadmoor Asylum(精神病院) for the Criminally Insane.

Murray and Minor became friends, sharing their love of words. Minor continued contributing to the dictionary, sending in more than 10,000 submissions in 20 years. Murray continued to visit Minor regularly, sometimes taking walks with him around the asylum grounds.

In 1910, Minor left Broadmoor for an asylum in his native America. Murray was at the port to wave goodbye to his remarkable friend.

Minor died in 1920, seven years before the first edition of the Oxford English Dictionary was completed. The 12 volunteers defined 414,825 words, and thousands of them were contributions from a very scholarly and devoted asylum patient.

小题1:According to the text, the first Oxford English Dictionary ____.

A．came out before Minor died

B．was edited by an American volunteer

C．included the English words invented by Murray

D．was intended to be the most ambitious English dictionary小题2:How did Dr. Minor contribute to the dictionary?

A．He helped Murray to find hundreds of volunteers.

B．He sent newspapers, magazines and books to Murray.

C．He provided a great number of words and quotations.

D．He went to England to work with Murray.小题3:Which of the following best describes Dr. Minor?

A．Brave and determined.

B．Cautious and friendly.

C．Considerate and optimistic.

D．Unusual and scholarly.小题4:What does the text mainly talk about?

A．The history of the English language.

B．The friendship between Murray and Minor.

C．Minor and the first Oxford English Dictionary.

D．Broadmoor Asylum and its patients.

土壤空气相对扩散系数

在保护和自动装置中，当主保护继电器的接点容量或数量不足时，常采用（）进行转换。

A.继电器

B.中间继电器

C.接触器

D.电流继电器