题目内容
4.Within a food chain,some living things are producers and some are consumers (消费者).Plants are producers because they use sunlight,soil and other things to make their own food.Animals are consumers because they have to eat other animals or plants.
There are four different kinds of consumers in the animal kingdom.A carnivore is an animal that only eats other animals.An herbivore is an animal that only eats plants.An omnivore is an animal that eats both plants and animals.A scavenger is an animal that eats dead animals.
Look at the picture.It is an example of a food chain.The food chain shows the order that animals eat each other in a community.In the picture,you can see what animal or plant is food for another animal.See?A leaf is food for a grasshopper,which then becomes food for a hungry mouse.The mouse is food for a snake.The snake is eaten by an eagle.In this way,all of these animals are connected.
根据上文内容判断正 ( T ) 误( F )
51.The main idea of the passage is"Four kinds of consumers".F
52.The underlined word"scavenger"means in Chinese"腐生动物".T
53.The food for a mouse according to the picture is a grasshopper.T
54.All kinds of animals share their living places with others.F
55.There are some living things which don't need to eat food.F.
分析 试题分析:本文根据一幅图画介绍了生物中食物链以及动物王国中的四种消费者.在食物链中,有些生物是生产者,有些是消费者,他们是紧密相连的.其中的消费者是:食肉动物,食草动物,杂食动物,腐生动物.
我们知道,所有的生物都必须吃食物.一个人,一只老虎,一只鱼,一只鸟,甚至一只虫子,食物是必须的.一般说来,所有的生物没有食物都会死亡.在世界的每一个部分,许多不同种类的动物分享生活场所,一起生活在群落里.他们被连接在一个食物链中.
在一个食物链中,有些生物是生产者,有些是消费者.植物是生产者,因为它们利用阳光;土壤和其他东西,制作他们自己的食物.动物是消费者,因为他们必须吃其他动物或植物.
动物王国中有四种不同的消费者.食肉动物是一种只吃其他动物的动物,食草动物是一种只吃植物的动物.杂食动物是动物和植物都吃的动物.食腐动物是一种吃死动物的动物.
看这幅图片,这是一个食物链的例子.食物链显示了动物在一个群落内吃的食物的顺序.在图片中,你可以看到动物或植物是另一种动物的食物.看见了吗?一片叶子是一只蝗虫的食物,它(蝗虫)又变成了一种饥饿的老鼠的食物.老鼠是蛇的食物.蛇(又)被鹰吃掉了.通过这种方式,所有这些动物都是相连的.
解答 51.答案:F;考查对句意的理解;根据There are four different kinds of consumers in the animal kingdom.可知本文主要讨论的是动物王国的四种消费者,应是指在动物王国.故此处与原文不符,故填F.
52.答案:T;考查对句意的理解;根据an animal that eats dead animals.可知吃动物尸体的动物,应是腐生动物.故此处符合原文的意思,故填T.
53.答案:T;考查对句意的理解;根据 A leaf is food for a grasshopper,which then becomes food for a hungry mouse.可知树叶是蚱蜢的食物,蚱蜢是老鼠的食物.故此处与原文相符,故填T.
54.答案:F;考查对句意的理解;根据many different kinds of animals share living places and live in communities (群落) together.可知许多不同的动物与其他动物分享自己的生活空间,但不是所有的动物都这样,命题的说法太绝对,故此处与原文不一致,故填F.
55.答案:F;考查对句意的理解;根据短文描述all living things have to eat food.For a man,a tiger,a fish,a bird,or even a worm,food is necessary.可知:所有的生物都必须吃食物.一个人,一只老虎,一只鱼,一只鸟,甚至一只虫子,食物是必须的.故此处与原文不一致;故填F.
点评 首先对原文材料迅速浏览,掌握全文的主旨大意.掌握全文的大意之后,细细阅读材料后的命题,弄清每题要求后,带着问题,再回到原文中去寻找、捕获有关信息,判断出正误.
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