农业生产潜力是指单位面积土地上每年所能获得的最大可能产量。读_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题选择题

农业生产潜力是指单位面积土地上每年所能获得的最大可能产量。读我国农业生产潜力分布简图，回答下列问题。

小题1:导致我国不同地区农业生产潜力差异的主导因素是（　　）

A．地形条件

B．气候条件

C．社会经济条件

D．人口分布小题2:农业部门在粮食收获前进行估产，主要用到的地理信息技术是（　　）

①遥感技术 ②全球定位系统 ③地理信息系统 ④数字地球

A．①②

B．①③

C．②③

D．②④

答案

小题1:B

小题2:B

题目分析：

小题1:从我国农业生产潜力分布简图中可以看出，农业生产潜力东南大西北少，主要是因为我国积温南多北少，降水从东南向西北递减形成的，主要是气候因素，B错；我们地形西高东低呈阶梯状分布，与图中不一致，A错；社会经济条件主要有交通、市场、农业技术、工业基础、劳动力等，这些条件不会形成我国东南多西北少的生产潜力的变化，C错；我国东部地区人口分布没有呈东南多西北少状况，D错。

小题2:遥感技术（RS）服务于资源勘探、动态监测和有关部门的规划决策。全球定位系统（GPS）为各类用户提供精密的三维坐标、速度和时间、GPS导航。地理信息系统（GIS）在城市管理中主要用来又对地理信息数据进行管理、查询、更新、空间分析和应用评价。用遥感技术得到农作物分布及生长状况，加之从地理信息系统获得各农作物分布面积，可进行农业部门在粮食收获前进行估产，B对。

阅读理解

根据短文内容完成下列表格，并将完整单词写在答题卡对应题号的横线上。(每空一词)

　　Photography is about taking photographs. In 1826, a Frenchman named
Niepce needed pictures for his business. But he was not a good artist. So he
invented a very simple camera. He put it in a window of his house and took a
picture of his garden. That was the first photograph.
　　The next important date in the history of photograph was 1837. That year,
Daguerre, another Frenchman, took a picture of his studio. He used a new kind of
camera and a different process. In his pictures, you could see everything very
clearly, even the smallest details. This kind of photograph was called a
daguerreotype.Soon, other people began to use Daguerre’s process. Travelers
brought back daguerreotypes from all around the world. People photographed
famous buildings, cities and mountains.
　　In about 1840, the process was improved. The photographers could take
pictures of people and moving things. The process was not simple. The
photographers had to carry lots of films and processing equipment(设备). But this
did not stop the photographers, especially in the United States.
　　Mathew Brady was a well-known American photographer. He took many
pictures of famous people. The pictures were unusual because they were very
life-like and full of personality. Brady was also the first person to take pictures of
war. His 1862 Civil War pictures showed dead soldiers and destroyed cities.
They made the war seem more real and more terrible.
　　In the 1880s, new inventions began to change photograph. Photographers
could buy

films readymade in rolls(卷). So they did not have to make the film
themselves. Also, they did not have to process(冲洗) the film at once. They could
bring it back to their st

udios and develop it later. They did not have to carry lots
of equipment. And finally, the invention of the small hand-held camera made
photography less expensive.
　　Photography is also a form of art. Some photographs were not just copies of
the real world. They showed ideas and feelings, like other art forms.

Title: The 1 of Photography

Photography doesn’t only mean taking photographs; it is also a form of art. Photographs showed not only the real world, but also the ideas and feelings.
In 1826	A Frenchman named Niepce invented a very simple camera and the first photograph was 2 by him.
In 1837	A Frenchman named Niepce invented a very simple camera and the first photograph was 3 by him.
In 1840	The photographers could take pictures of people and moving things with lots of films and processing equipment.
In 1862	An American photographer Brady took many pictures of real and 4 things in the war. He was the first person to take war pictures.
In the 1880s	There were films readymade in rolls(卷). Photographers did not have to carry lots of equipment any more. The invention of the small hand-held camera made photography 5 .

单项选择题

既是HBV感染又是病毒复制的标志（）

A.HBsAg

B.HBeAg

C.抗-HBs

D.抗-HBe

E.抗-HBc