问题 综合

(10分)下图示意世界某区域,下表为图中甲、乙两地的各月降雨量表(单位:毫米)阅读图表完成下列问题。

(1)描述该区域的地形特征。(3分)

(2)比较①、②河段水文特征的差异。(2分)

(3)比较甲、乙地降雨量的差异,并分析原因。(5分)

答案

(1)(3分)高原为主(1分);西北高东南低(1分);海岸线平直(1分)。  

(2)(2分)①河段较②河段流量小(1分),水位(径流)季节变化较小(1分)。 

(3)(5分)甲地降雨量比乙地小(1分)。原因:甲地距海较远,受暖流影响较小(1分), 处于东南信风的背风地带,降水量较小(1分);乙地距海较近,受暖流影响较大(1分), 处于东南信风的迎风地带,降水量较大(1分)

题目分析:

(1)读图,根据等高线数值分析,大部分是海拔在500-1000米以上,1000米等高线内部平坦,所以地形以高原为主,地势西北高东南低。图中海湾少,海岸线平直。  

(2)读图分析,①河段源头是湖泊,没有其它支流注入,②河段有几条支流注入,包括①河段水量,所以①河段比②河段流量小。①河段源头是湖泊,水源补给稳定,所以水位季节变化较小。 

(3)读图,可以判断是非洲南部,沿岸有暖流经过,甲地距海较远,受暖流影响较小,从地形、气压带风带角度分析,甲地处于东南信风的背风地带,所以降水量较小。乙地距海较近,受暖流影响较大,处于东南信风的迎风地带,所以降水量较大。因此甲地降雨量比乙地小。

阅读理解

阅读理解。

     You're in a bit of a dilemma standing in front of the produce section of your local supermarket.

In one hand, you're holding a conventionally grown Granny Smith apple. In your other hand, you

have one that's been organically grown. Both apples are firm, shiny and green. Both provide vitamins

and fiber, and both are free of fat, sodium and cholesterol.

   The conventionally grown apple costs less and is a proven family favorite. But the organic apple

has a label that says "USDA Organic". Does that mean it's better? Safer? More nutritious? Become

a better informed consumer for your next trip to the supermarket.  Several differences between

organic and non-organic foods exist. The word "organic" refers to the way farmers grow and process

agricultural products, such as fruits, vegetables, grains, dairy products and meat. Organic farming

practices are designed to encourage soil and water conservation and reduce pollution. Farmers who

grow organic produce and meat don't use conventional methods to fertilize, control weeds or prevent

livestock disease.

   Here are other differences between conventional farming and organic farming:

* Organic or not? Check the label

    The U.S. Department of Agriculture (USDA) has established an organic certification program

that requires all organic foods to meet strict government standards. These standards regulate how

such foods are grown, handled and processed. Any farmer or food manufacturer who labels and

sells a product as organic must be USDA certified as meeting these standards. Only producers who

sell less than $5,000 a year in organic foods are exempt(免除) from this certification.

    If a food bears a USDA Organic label, it means it's produced and processed according to the

USDA standards. The seal is voluntary, but many organic producers use it.

1. The main purpose of the passage is ________________.

A. to promote the sales of organic food

B. to inform people organic food is better for their health

C. to compare conventional and organic foods  

D. to persuade people to become informed consumers

2. According to the passage, organic farming is intended to ________________.    

A. improve the quality of the soil and water

B. take the place of the traditional agriculture entirely

C. prevent livestock from getting disease more effectively    

D. adopt environmentally-friendly methods to grow plants and feed animals.

3. According to the passage, the conventionally grown apple ________________.  

A. costs less but tastes worse than an organic one

B. doesn't look the same as an organic one

C. contains more fat, sodium and cholesterol

D. has proven itself acceptable by the family

4. Which of the following methods belongs to organic farming?

A. Using chemicals to kill insects and prevent disease.

B. Using rotted plants as fertilizer to promote plant growth.

C. Using growth hormones to speed up animals' growth.

D. Using pests to reduce insects and disease.

5. From the passage we know the organic certification program ________________.  

A. is not meant for all producers of produce

B. makes it a must to attach a USDA Organic label

C. sets restrictions on the sales of organic produce

D. requires all foods to satisfy the strict government standards

单项选择题