题目内容

【题目】北京时间2009年5月8日消息,据美国《连线》杂志网站报道,太阳最近出现了一个新的黑子,它可能预示着人们期待已久的下一轮太阳活动周期的开始。美国科学家日前警告说,2012年地球将会遭遇强烈的太阳风暴,其破坏力将远远超过卡特里娜飓风,而且地球上几乎所有的人都将难逃其灾难性的影响。据此完成下列各题。

【1】黑子一般发生在太阳的(

A.光球层 B.色球层 C.日冕层 D.日珥层

【2】有关这种现象对地球影响的叙述,正确的是(

A.该现象发生时,抛出的高能带电粒子,可以使地球运动状态发生明显改变

B.该现象产生时,地球上的降水量一定明显增加

C.该现象产生时,人们使用中的手机可能会出现信号中断现象

D.该现象产生时,地球上的降水量一定明显减少

【答案】

【1】A

【2】C

【解析】

试题分析:

【1】太阳大气由里往外分为光球层,色球层,日冕层,光球层上的太阳活动类型为黑子,色球层上的太阳活动类型为耀斑,所以A正确。

【2】黑子主要影响地球上的气候变化,全球各地的降水量的变化与此有相关性,有些地方呈正相关,也有些地方呈负相关,而黑子活动的变化,也使耀斑爆发增多,则会扰乱电离层,产生磁暴,干扰无线电短波通讯。

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【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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