问题 选择题

下图是甲、乙两幅区域图,回答下列小题。

(1)甲、乙两图所示区域的主要农业地域类型分别是

A.混合农业、商品谷物农业  B.季风水田农业、大牧场放牧业

C.季风水田农业、乳畜业   D.乳畜业、季风水田农业

(2)1949年洞庭湖面积有4350平方千米,由于泥沙淤积和大量围垦,到1997年其面积只有2691平方千米,缩小了近40%。下列为了减缓洞庭湖面积的减小采取的主要措施符合可持续发展观点的是

A.加强挖沙、清淤工作     B.减少湖泊上游地区的农业灌溉用水

C.减少富含氮、磷污水的排放  D.保护湖泊上游地区的植被,并且退耕还湖

(3)关于甲、乙两地所示区域的相关叙述不正确的是

A.甲地主要以亚热带常绿阔叶林为主  B.甲地主要的气象灾害有暴雨洪涝和干旱

C.乙地湖泊主要由冰川作用形成    D.乙地主要的气象灾害有寒潮

答案

(1)C

(2)D

(3)B

(1)甲属于我国南方,主要农业地域类型是季风水田农业;五大湖区乳主要农业地域类型是畜业。

(2)为了减缓洞庭湖面积的减小,A项的做法,治标不治本,只是暂时性的缓解。C主要是针对水体富营养化。B项主要是针对水资源不足的问题。

(3)甲地属于亚热带季风气候。主要的气象灾害有暴雨洪涝。

单项选择题

根据短文内容,从短文后的七个选项中选出正确的填入空白处。选项中有两项为多余选项。

The Science of Risk-Seeking

Sometimes We decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth tasking.   71   Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say it may have to do with how our brains work.

The reason why any of us take any risks at all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring.    72    As the quality of Risk-taking was passed from on ration to the next, humans ended up with a sense of adventure and a tolerance for risk.

So why aren’t we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one Killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today. So maybe you love car racing, or maybe you hate it.  73  

No matter where you are on the risk-seeking range, scientists say that your Willingness to take risks increases during your teenage years.   74   To help you do that, your brain increases your hunger for new experiences. New experiences often mean taking some risks, so your brain raises your tolerance for risk as well.

Mean taking some risks, so your brain raisers your tolerance for risk as well.

75  For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes active.

As experts continue to study the science of risk-seeking, we’ll continue to hit the mountains, the waves or the shallow end of the pool.

71()

A.It all depends on your character.

B.Those are the risks you should jump to take.

C.Being better at those things meant a greater chance of survival.

D.Thus, these well-equipped people survived because they were the fittest.

E.This is when you start to move away from your family and into the bigger world.

F.However, we are not all using the same reference standard to weigh risks and rewards.

G.New brain research suggests our brains work differently when we face a nervous situation.

单项选择题