—Are those your pen friends? —Yes, _____

人听到声音的能力叫听力。在人的一生中，18～28岁年龄段的听力最好。人的听力与身体的健康状况、环境噪声等因素都有关系。超过85～90 dB的声音会严重影响听力，如长时间玩游戏、“蹦迪”，就有可能让你一夜耳聋；而长时间听“随身听”的被放大音量，也会造成耳膜损伤、失聪等。因生活中用耳不当造成的“噪声性耳聋”，已逐渐成为导致耳疾的最主要原因。专家们呼吁，青少年要爱护自己的耳朵。   

阅读上文后，请回答下列问题。

(1)人的听力与哪些因素有关？哪些活动会造成耳膜损伤而影响听力？

(2)长时间玩电脑游戏、“蹦迪”、听“随身听”会对听力造成什么影响？

(3)为了保护听力就要控制噪声不超过[ ]

A．90 dB    

B．70 dB    

C．50 dB    

D．30 dB

据《白银资本》统计数据：美洲在17世纪和18世纪分别生产了42，000吨和74，000吨，各有27，000吨和5 4，000吨运到欧洲，两个世纪合计81，000吨。在欧洲获得的白银中，大约一半(39，000吨)又转手到亚洲，这些白银最终主要流人中国。对这组数据的解释不合理的是     [ ]

A．中国的封建经济仍然在不断发展

B．新航路开辟推动了世界各地的经济交流

C．资本主义的发展使欧洲需要更多的资本

D．中国客观上成为世界贸易的中心

Chinese writer Mo Yan has won the 2012 Nobel Prize in Literature, announced the Swedish Academy in Stockholm on Thursday．The win makes Mo Yan the first Chinese citizen to win the Nobel in its history．Informed of his win today, the author, who was having dinner at home, was “overjoyed and scared"．

Born in 1955 to parents who were farmers, Mo Yan－a pen name for Guan Moye，grew up in Gaomi in Shandong province in eastern China. At the age of 12, he left school to work, first in agriculture, later in a factory. In 1976 he joined the army and during this time began to study literature and writing．

He published his first book in 1981, but found literary success in 1987 with Hong Gaoliang Jiazu, which was successfully filmed in the same year, directed by a famous Chinese director Zhang Yimou. In his writing, Mo Yan draws on his youthful experiences and on settings in the province of his birth and his works show the life of Chinese people as well as the country's unique culture and folk customs. Mo Yan is known as a prolific（多产的）writer. In addition to his novels, he has published many short stories and essays on various topics. Despite his social criticism, he is seen in his homeland as one of the most famous contemporary authors. Dozens of his works have been translated into English, French, Japanese and many other languages．

The awarding ceremony will be held on December 10．The winner will win a medal, a personal diploma and a cash award of about $l million．

小题1:How did Mo Yan feel when he was told about the news?

A．Excited and proud．

B． Happy and surprised

C．Worried and cautious

D． Uncertain and shocked小题2:Mo Yan developed his ability for writing when he was        ．

A．on a farm

B．in a factory

C．in a school

D．in the army小题3:One of Mo Yan's characteristics of writing is that he         .

A．writes about topics he is familiar with

B．focuses on social problems in the country

C．describes his characters in a unique way

D．explains difficult matters in simple words小题4:Which of the statements is true?

A．Mo Yan published his first book when he was 20 years old.

B．The movie Hong Gaoliang was made in 1987.

C．Mo Yan only writes novels.

D．Mo Yan’s works are mostly about city life.小题5:What's the best title for this passage?

A．How Mo Yan Gets Nobel Prize

B．An Introduction to Nobel Prize

C．Mo Yan Wins Nobel Prize in Literature

D．A World Famous Writer, Mo Yan

最常用的NPN化合物是（）。

塔填料的作用是为气、液两相提供充分的接触面，并为提高其湍动程度创造条件，以利于传质。