题目内容

【题目】 20世纪60—70年代,数以万计的转业军人和知识青年奔赴“北大荒”垦荒造田,使这块沉睡的荒芜之地变成世界闻名的“北大仓”,位于东北的这片土地如今成为我国重要的商品粮基地。

据此回答下面小题。

1北大荒发展农业的主要制约因素是( )

A. 水源不足B. 地表崎岖C. 热量不足D. 土壤贫瘠

2为保护环境,恢复生态,“北大仓”的发展方向是( )

A. 围湖造田B. 大力发展重工业C. 扩大开垦D. 退耕还湿

【答案】

1C

2D

【解析】

东北平原的北部地区土地肥沃,因土壤中富含腐殖质被称为“黑土地”。经过建设者多年的艰苦努力,原先叫做“北大荒”的大片荒地,已经发展成为我国重要的商品农业基地,盛产小麦、大豆、甜菜和乳肉制品,成了富饶的“北大仓”。

1北大荒位于黑龙江省的东北部,由于纬度较高,气候典型的特征是:冷湿;所以北大荒地区发展农业的主要制约因素是热量不足;故选:C。

2湿地具有强大的生态环境功能,故“北大仓”今后的发展方向应该是停止围垦沼泽地,退耕还湿地,改善当地的生态环境;故选:D。

本题考查北大荒的气温特点及生态保护,理解解答即可。

练习册系列答案
相关题目

【题目】 As we know the 2012 Olympic Games will be held in London the UK The torch relay (火炬接力) is starting It begins on May 19 2012 and it ends on July 27 During the 70-day torch relay it will pass through towns and cities including Bristol Liverpool Manchester Oxford and Dover London's Olympic Games will be held from July 27 to August 12The Olympic Flame(火焰) will travel 8000miles across the UK 8000 torchbearers(火炬手) will carry the Olympic Flame for about 300 meters each Half of the torchbearers should be aged between 12 and 24 and the rest include people with a story of achievementThe torch was designed by Edward Barber and Jay Osger by It looks like a large triangle(三角形), which stands for the three words faster higher stronger It also means that London is hosting(举办) the Olympic Games for the third time This is great in Olympic history The torch has 8000circles standing for the 8000 torchbearers The torch relay is one of the most important parts of the Olympic Games

根据短文内容,完成下列小题.

1Where will the 2012 Olympic Games be held

________________________________________________

2When does the torch relay end

________________________________________________

3Will the torch relay pass through Oxford

________________________________________________

4What does the torch look like

________________________________________________

5How many circles does the torch have

________________________________________________

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网