题目内容

【题目】读我国某地区农事安排表,回答下列各题。

第一年

第二年

第三年

月份

10

11

12

1

2

3

4

5

6

7

8

9

10

11

12

1

2

3

4

5

6

7

8

9

作物

作物Ⅰ

作物Ⅱ

冬季休耕

作物Ⅲ

1作物Ⅰ、Ⅱ、Ⅲ可能的组合是

A. 油菜、玉米、小麦 B. 小麦、玉米、棉花

C. 甜菜、玉米、大豆 D. 小麦、棉花、大豆

2对本地区农业生产的相关描述正确的是

A. 本地熟制为一年一熟 B. 地形起伏大是农业生产的不利条件

C. 春旱严重是盐碱化的重要成因之一 D. 肥沃的黑土是农业高产的有力保障

【答案】

1

2

【解析】试题分析:

1】根据表格中农作物的生长周期可知,作物秋季播种,越冬后夏初收割,应该是冬小麦;作物夏季播种,当年秋季收获,应该是夏播玉米,故选项B正确。

2】由表格可知该区域熟制为一年二熟或者二年三熟,故排除选项A;由于该地以种植业为主,应该位于平原地区,地形起伏小,故排除选项B;肥沃的黑土主要分布在三江平原、松嫩平原,当地是一年一熟,与表格不符,故排除选项D;小麦、玉米、棉花是我国华北地区的主要农作物,春旱降水少,气温回升快,蒸发旺盛,旱灾严重,加剧土壤盐碱化,所以春旱严重是盐碱化的重要成因之一,故选项C正确。

练习册系列答案
相关题目

【题目】阅读理解

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

Choke Selassie, aged 13, is working hard to help drivers avoid potholes(坑洼). The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city.

Choke developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you with a beep. Drivers can also use the app to report any potholes and look for other routes they can take to avoid roads that have them.

The app relies on current available information about the streets of Jackson, already stored in a database of the city’s 311 call system. Through the call system, citizens dial 3-1-1 to report non-emergency problems which include potholes. Choke and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype.

While developing the app, the boys took part in a Minority Male Makers Program sponsored by Verizon and held at Jackson State University. They learned 3D printing and design, and how to create apps. Through the program, Choke and his friends received encouragement and guidance.

Although the app isn’t yet available for sale, Choke is already looking for ways to improve the app. He hopes to add more to it until it spreads all over the country.

【1】Why is the car damage mentioned in the first paragraph?

A. To scold the road builders.

B. To introduce their bad luck.

C. To tell the inspiration for the app.

D. To warn the danger of careless driving.

【2】What is the app used to do?

A. Warn drivers about potholes.

B. Help drivers obey traffic rules.

C. Tell drivers to avoid red lights.

D. Stop drivers using mobile phones.

【3】How does the app work through the 311 call system?

A. By replying to citizens’ calls.

B. By broadcasting traffic accidents.

C. By settling non- emergency problems.

D. By using its information about potholes.

【4】Which can be Choke’s future target?

A. Encouraging more kids to create apps.

B. Taking part in more learning programs.

C. Making the app available for sale online.

D. Making the app include streets nationwide.

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