题目内容

【题目】湿地资源的破坏已严重威胁到居民的生存环境和区域的可持续发展。下列7-8题的湿地资源的破坏方式造成的恶果分别是:

【1】捕捞、狩猎、砍伐、采挖过量的湿地生物资源

A、水土流失,加剧江河湖泊的泥沙淤积 B、湿地水质碱化,湖泊萎缩

C、湿地的生物多样性逐渐丧失 D、湿地水污染,严重危及湿地生物的生存环境

【2】森林资源的过度砍伐、植被破坏

A、水土流失,加剧江河湖泊的泥沙淤积 B、湿地水质碱化,湖泊萎缩

C、湿地的生物多样性逐渐丧失 D、湿地水污染,严重危及湿地生物的生存环境

【答案】

【1】C

【2】A

【解析】

试题分析

【1】该题主要考查湿地减少或破坏对生物多样性的影响。捕获、狩猎、砍伐、采挖等过量获取湿地生物资源,造成了湿地生物减少,物种和遗传基因多样性损失惨重,最后导致生物多样性逐渐丧失;其生态功能也严重受损。故答案选C项。

【2】森林主要具有涵养水源、保持水土、净化空气等生态功能,因此森林资源的过度砍伐、植被破坏将会使得水土保持和涵养水源能力下降,水土流失加重,河流的含沙量增多,加剧江河湖泊的泥沙淤积,最终导致洪涝灾害多发,故答案选A项。

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相关题目

【题目】Some pigs lend to be optimistic while others have a more pessimistic view, according to a new research that is meaningful to animal welfare. The study, published in the journal Biology Letters, is the first to show that mood and personality interact in an animal, influencing judgment.

Asher, a researcher at his University of Newcastles Institute of Neuroscience, and her team housed groups of pigs in the two types of environments. One reflected standard commercial conditions and the other was cushier with more space and plenty of sell, deep straw. After that, the researchers picked 18 pigs from each type of housing arrangement to train their judgment.

To do this, we trained each pig there would be a bowl with chocolate sweets specifically M&Ms, pigs love M&Ms and in a bowl at the opposite side of the room there would be a bowl that would contain coffee beans, which pigs find bitter-tasting, senior author Lisa Collins said.

Over number of training trials, pigs learned to go to the bowl reliably when it was in the corner where they had figured out to expect M&Ms. On the contrary, they quickly learned to avoid the bowl when it wasn’t in the comer where they would expect to find the coffee beans.

The researchers next placed an unfamiliar bowl in different locations, to see how the pigs would react. Some gaily dashed to the bowl no matter what, exhibiting optimism that it would contain their favorite seeds. Others, however, behaved as though they expected it to contain coffee beans, displaying pessimism.

The findings suggest that a one size- fits - all answer to animal welfare issues does not exist. Student have suggested that how an animal is trended during his lifetime can directly affect meal quality and taste.

【1】What was the study devoted to figuring out?

A. The influence of pigs living environment.

B. The influence between humans and pigs.

C. The differences of two types of pigs’ personality.

D. The relationship between pigs mood and judgment.

【2】What does the underlined word “cushier” in Paragraph 2 mean?

A. Simple. B. More comfortable.

C. Non-profitable. D. Less free.

【3】Which bowl can test whether a pig is optimistic or pessimistic?

A. The bowl with chocolate sweets.

B. The bowl containing coffee beans.

C. The bowl full of both sweets and beans.

D. The bowl unfamiliar to two types of pigs.

【4】What do the findings of the new research imply?

A. People should treat pigs equally.

B. Peoples health relies on meat quality.

C. People should meet pigs various needs.

D. Peoples attitude toward pigs is totally wrong.

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