【題目】分析下列材料,完成問題。

材料一:

自然資源

土地面積

礦產(chǎn)資源

耕地面積

江河年徑流量

森林面積

總量在世界上的住次

3

3

4

6

6

人均量占世界人均量的比例

1/3

1/2

1/3

1/4

1/5

材料二:l949年我國(guó)糧食總產(chǎn)量約為l億噸,人均糧食占有量約為200千克,2003年我國(guó)糧食總產(chǎn)量約為4.3億噸,人均糧食占有量約為334千克。

(1)材料一說明我國(guó)自然資源總量________、人均量________的特征,造成這一特征的原因主要是________

(2)材料二提供的數(shù)據(jù)可以看出我國(guó)人口增長(zhǎng)的速度比糧食增長(zhǎng)速度________(快、慢)。

(3)為了使我國(guó)人口增長(zhǎng)與社會(huì)經(jīng)濟(jì)發(fā)展相適應(yīng),與資源、環(huán)境相協(xié)調(diào),我國(guó)政府把實(shí)行________作為一項(xiàng)長(zhǎng)期的基本國(guó)策。

(4)目前,我國(guó)耕地正在逐年減少,請(qǐng)你說出減少的原因有哪些:________。

【答案】大(豐富);少(。蝗丝诙;快;計(jì)劃生育;人口增長(zhǎng),濫占耕地,利用不當(dāng),土地退化、荒漠化

【解析】(1)材料一說明我國(guó)自然資源總量大,人均占有量少的特征,造成這一特征的原因主要是我國(guó)人口多。

(2)材料二提供的數(shù)據(jù)可以看出我國(guó)人口增長(zhǎng)的速度比糧食增長(zhǎng)速度快。

(3)為了使我國(guó)人口增長(zhǎng)與社會(huì)經(jīng)濟(jì)發(fā)展相適應(yīng),與資源、環(huán)境相協(xié)調(diào),我國(guó)政府把實(shí)行計(jì)劃生育作為一項(xiàng)基本的國(guó)策。

(4)目前,我國(guó)耕地正在逐年減少,主要由于人口的增長(zhǎng)、濫占耕地,利用不當(dāng)、土地退化、荒漠化等。

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