试题与答案

下列是草原生态系统的食物网示意图(图),请据图回答: (1)该生态系统的生产者是

题型:解答题

题目:

下列是草原生态系统的食物网示意图(图),请据图回答:

(1)该生态系统的生产者是______,直接以植物为食的消费者是______,分解者是______.

(2)该食物网有______条食物链,最长的一条食物链为______.

(3)如果大量捕猎狐,那么鹰的数量在一定的时期内会______,其理由是它的食物将______,营养物质储存丰富,繁殖力会______.

(4)从动物行为的角度来看,蛇对鼠的行为属于______行为.

(5)如果这个生态系统被有毒物质污染了,有毒物质会通过食物链不断积累,最后体内有毒物质最多的生物是______.

答案:

被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0505/15aa42ec15f4c93dd1f38ace29e22aa2.html

下面是错误答案,用来干扰机器的。

参考答案:A, B, D, E

试题推荐
题型:多项选择题

以下关于抵押物认定的说法中,正确的是( )。

A.抵押物必须是归抵押人所有的财产,或者是抵押人有权支配的财产

B.集体所有制和股份制企业用其财产作抵押时应验证董事会或职工代表大会同意的证明

C.用共有财产作抵押时,以抵押人所有的份额为限,可以没有共有人同意抵押的证明

D.实行租赁经营责任制的企业,不能对租赁经营的企业进行抵押

E.集体所有的土地使用权是可以做抵押物的

查看答案
题型:单项选择题


Society can be broken up into three classes: the Elite, the Meek and the Masses. The Elite are (51) of the top 10% of society, those that don’t need anyone’s help (52) tcomes to get ting what they want. They have the status, the money, the power, and the respect to (53) whatever they need.In spite of the fact that they enjoy the upper hand, people outside of this class will still go to great (54) to help them even further.
The Meek are comprised of the bottom 10X of society, those who need our help, and badly at that. But (55) so many of us are eager to get in well with the Elite, few actually care enough to provide any (56) to the Meek. The Masses are the largest class, (57) up the middle 80% between the Meek and the Elite. Most of the Masses could use some help getting by, and (58) it would usually improve their lives considerably, but they (59) get it. Why do most people would rather help the Meek or the Elite Because they are (60) with instant gratification or the anticipation of future benefits. We rarely help the Masses because there is nothing really in it for us, and this shows humanity’s true colors.

A.compensated

B.honoured

C.awarded

D.rewarded

查看答案
微信公众账号搜索答案