问题 问答题 简答题

混养的类型?其模式特点又为什么?

答案

参考答案:

(1)以草鱼为主养鱼的混养类型

特点:①放养大规格鱼种。

②以投喂草类作为主要饲料。

③鲤鱼放养量要少(因动物性饲料少),放养规格要适当增大。

(2)以鲢鳙为主养鱼的混养类型

特点:①鲢、鳙放养量占70%~80%,毛产量占50%~60%。

②以施有机肥料为主要措施。

③为改善水质,充分利用有机碎屑,重视混养食有机碎屑的罗非鱼、银鯝鱼等。

④实行鱼、畜、禽、农结合,开展综合养鱼。

(3)以青鱼、草鱼为主养鱼的混养类型

特点:青、草鱼的放养量相近似。

②同种异龄混养。

③以成鱼池套养培育大规格鱼种,成鱼池鱼种自给率达80%以上。

④以投天然饲料和施有机肥为主,辅以精饲料或颗粒饲料。

⑤自7~8月轮捕2~3次,6月补放鲢、鳙春花为暂养在鱼种池的鱼种。

⑥实行“鱼、畜、禽、农”结合。

(4)以青鱼为主养鱼的混养类型

(5)以鲮、鳙为主养鱼的混养类型

(6)以鲤为主养鱼的混养类型

阅读理解

Jack London had endured more hardships by the age of twenty-one than most people experience in a lifetime. His struggles developed in him sympathy for the working class and a lasting dislike of hard work and provided inspiration for his career as a writer.

London grew up in San Francisco in extreme poverty. At an early age, he left school and supported himself through a succession of un skilled jobs ----working as a paper boy, in bowling alleys, on ice wagons, and in canneries(罐头食品厂) and mills. Despite working long hours at these jobs, London was able to read constantly, borrowing travel and adventure books from the library.

The books London read inspired him to travel, and his job experiences led him to become active in fighting for the fights of workers. He sailed to Japan on a journey aiming at catching seals and joined a cross-country protest march with a group of unemployed workers. After being arrested for vagrancy near Buffalo, New York, London decided to educate himself and reshape his life. He quickly completed high school and entered the University of California.

After only one term, however, the appeal of fortune and adventure proved uncontrollable. London gave up his studies and traveled to the Alaskan Yukon in 1897 in search of gold. Jack London was among the first of these miners. He may have searched for more than gold, however. London once commented, “ True, the new region was mostly poor; but its several hundred thousand square miles of coldness at least gave breathing space to those who else would have choked at home.” Although he was unsuccessful as a miner, London’s experiences in Alaska taught him about the human desire for wealth and power and about humankind’s inability to control the forces of nature. While in Alaska, London also absorbed memories and stories that would make him known one hundred years later.

Once back in California, London became determined to earn a living as a writer. He rented a typewriter and worked up to fifteen hours a day, spinning his Alaskan adventures into short stories and novels.

According to legend, London’s piles of rejection slips from publishers grew to five feet in height!

Even so, London preserved. In 1903, he earned national fame when he published the popular novel The Call of the Wild. He soon became the highest paid and most industrious writer in the country. During his career, he produced more than fifty books and earned more than a million dollars. Several of his novels, including The Call of the Wild(1903),the Sea-Wolf(1904),the White Fang(1906),have become American classics. In fact, he was a creative writer whose fiction explored several regions and their cultures: the Yukon, California, Hawaii, and the Solomon Islands. He experimented with many literary forms, from traditional love stories and dystopias(反面乌托邦小说)to science fantasy. His noted journalism included war communication, boxing stories, and the life of Molokai lepers(麻风病患者). He was among the most influential figures of his day, who understood how to create a public persona and use the media to market his self-created image of poor-boy-turned-success. London's great passion was agriculture, and he was well on the way of creating a new model for spreading through his Beauty Ranch when he died of kidney disease at age 40. He left over fifty books of novels, stories, journalism, and essays, many of which have been translated and continue to be read around the world. His best works describe a person’s struggle for survival against the powerful forces of nature. “To Build a Fire”, for example, tells the story of a man’s fight to survive the harsh cold of the Alaskan winter.

小题1:_________made Jack London reconsider his life in the future.

A.His job experience

B.The books he read

C.Being arrested

D.Long-hour work小题2:What is TRUE about Jack London?

A.Jack London was poor all his life.

B.Jack London got enough money while in the search of gold.

C.The books Jack London read inspired him to travel and become active.

D.The experience of gold searching made Jack London determined to write novels about Alaska adventures.小题3:After the experience in Alaska, Jack London ________________.

A.realized the nature of human beings.

B.knew people could control the nature finally.

C.regretted being there.

D.thought highly of himself.小题4:In paragraph 4, the sentence “True, the new region was mostly poor; but its several hundred thousand square miles of coldness at least gave breathing space to those who else would have choked at home.”  implies_______________________________.

A.Jack London regarded Alaska a poor place as he never got any gold there.

B.people would have been ill at home if they had never been Alaska.

C.People searching for gold there still have chance to win.

D.Alaska was a poor but large region.小题5:Which one of following works doesn’t belong to Jack London according to the passage?

A.love stories

B.poetry

C.journalism

D.essays小题6:What can we learn from Jack London’s final success?

A.Failure is the mother of success.

B.Practice makes perfect.

C.Knowledge is powerful.

D.All of above.

单项选择题 A1型题