题目内容

【题目】下列自然资源选项中哪些是可再生资源,哪些是非可再生资源,选择正确的写在相应的横线上,并说出理由。

①花岗岩 ②温泉 ③树木 ④草地 ⑤核能 ⑥藏羚羊 ⑦风能 ⑧天然气

(1)可再生资源有:________;

理由:________。

(2)非可再生资源有:________;

理由:________。

【答案】(1)②温泉、③树木、④草地、⑥藏羚羊、⑦风能;人类开发利用后,可以在较短时间内更新、再生,或者能够重复利用、循环使用的自然资源;

(2)①花岗岩、⑤核能、⑧天然气;经人类开发利用后蕴藏量不断减少,在相当长的时间内不可能再生的自然资源

【解析】

整体本题考查的是自然资源的分类相关知识,需要识记可再生资源和非可再生资源的概念。

(1)自然资源分为可再生资源和非可再生资源,可再生资源是指可以在短时间内更新、再生或循环利用的自然资源,如生物资源、土地、森林、水能、水、阳光;非可再生资源是指开发利用后,短时间内几乎不可能再生的自然资源,如矿产资源、煤、石油。故以上自然资源中,②温泉、③树木、④草地、⑥藏羚羊、⑦风能可以在较短时间内更新、再生,或者能够重复利用、循环使用,是可再生资源。

(2)自然资源分为可再生资源和非可再生资源,可再生资源是指可以在短时间内更新、再生或循环利用的自然资源,如生物资源、土地、森林、水能、水、阳光;非可再生资源是指开发利用后,短时间内几乎不可能再生的自然资源,如矿产资源、煤、石油。故以上自然资源中,①花岗岩、⑤核能、⑧天然气经人类开发利用后蕴藏量不断减少,在相当长的时间内不可能再生,是非可再生资源。

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【题目】 The polar bear (北极熊), in fact, does not have white fur. Usually after a meal, polar bears have a short sleep. A polar bear can have 2 to 3 babies at a time. They live with their mothers until they are about two and a half years old.

However, polar bears will die out (灭绝) soon because of people. There are only 20,000 to 25, 000 polar bears in the world. They are trying hard to survive today. The number of polar bears is becoming smaller and smaller because of the loss of sea ice (海冰的消融).And polar bears mostly live on the sea ice, not on the land ice. Global warming makes the sea ice less and less.

Don’t you want to save polar bears? Don’t you want to make the world a better place for all living things? Do not just sit there and wait. Let’ s start doing something to protect the environment! Take the bus more often from now on, turn off the light when you don t need it, and try to make less rubbish... Every small thing can be great! Join me and save the polar bears, and, of course, the tigers, the giant pandas and all other animals that are in danger.

1The underlined word “they” in Paragraph 1 refers to (指的是)________.

A. father polar bearsB. mother polar bearsC. baby polar bearsD. strong polar bears

2What does the underlined word “survive” in Paragraph 2 mean in Chinese?

A. 进化B. 生存C. 见食D. 增肌

3According to the passage, the sea ice becomes less and less because of ________.

A. global warmingB. hot weatherC. killingD. travelling

4What is the main idea of this passage?

A. To show the number of polar bears is getting smaller and smaller.

B. To tell people polar bears will soon have nowhere to live.

C. To let people know why polar bears are in danger.

D. To ask people to protect animals.

5Where might this passage come from?

A. From a book about animals.B. From a book about plants.

C. From a report on protecting rivers.D. From a report on cleaning the sea.

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