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Restoring the quake­hit ecosystems is a question of balancing the interests of the local people and the environment. Rural methane (沼气) projects can reduce the number of locals taking firewood from the mountainsides. The use of straw as food for animals will ensure that vegetation(草木) can grow. In Sihai township and Dazhuangke village, in Beijing, they now have a forestry coverage of 85% or more, compared to the 30% they had 15 years ago. Back then, land was used very inefficiently: one person would use 20 mu of forest just for firewood. With those pressures on the ecosystem, no amount of spending on reforestation will succeed. Then the government relocated the population and paid those who remained to tend the forest and provide coal. This reduced the pressures on the ecosystem and it was able to recover naturally. When an ecosystem has not been pushed past certain limits, it is able to recover on its own. Human involvement should only play a minor role, including after an earthquake. This is particularly the case for sandy grasslands, grasslands deserts, the mountains of the south and the northern sides of mountains in the north. In these areas soil remains and the water, light, heat and nutrients needed are available. Less human involvement is even more appropriate in areas with a small population, where it can avoid money being wasted on ineffective efforts, such as creating forests in dry areas. The creation of nature reserves should be a model to allow damaged ecosystems to recover. Funding can start at the national level; centrally­funded nature reserves can enforce environmental protection laws and help to promote the local economy. This will solve the problems of reserves being run to make money. When national reserves are funded, local governments will be able to adopt the same model and provide the funds for nature reserves from their own budgets. The first project should be established in nature reserves hit by the quake; these can then become models for other areas. 小题1:To restore the quake­hit ecosystem, government should ________. A.forbid locals from taking firewood from the mountainsides B.encourage local people to feed their animals just with straw C.spend large amounts of money relocating the population D.protect the environment without harming locals' interests 小题2:The forestry coverage in rural Beijing has increased greatly because ________. A.pressures on land were reduced B.a large amount of coal is provided C.no people live in that area D.locals take good care of the forest 小题3:According to the passage ________ play(s) a major role in ecosystem recovery. A.local people B.nature itself C.human involvement D.government's effort 小题4:According to the last paragraph, which of the following is NOT true? A.Nature reserves could be helpful to recover the damaged ecosystems. B.Centrally­funded nature reserves are beneficial to local economy. C.Some nature reserves are created for the purpose of making money. D.The first projects on nature reserves should be set up in quake­hit areas.
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【单选题】大腿周经测量处常在髌骨上
A.
10~15cm
B.
5~10cm
C.
15~20cm
D.
20~25cm
E.
25~30cm
【单选题】地质年代单位的宙、代、纪、世与地层单位相对应的是( )。
A.
群、组、段、层
B.
宇、界、系、统
C.
阶、时、带
D.
期、时、组
【简答题】D触发器具有 和 的功能。
【单选题】()地质时代单位是宙、代、纪、世。
A.
地方性的
B.
大区域性的
C.
小范围性的
D.
国际性的
【简答题】高铬钢液脱碳时,CO气泡的生成部位有熔池内部、( )和悬浮液滴三个部位。熔池内部的脱碳比例越小,表面和悬空液滴所脱碳的比例越大,钢液最终含碳量越( )。
【单选题】景区讲解员在讲解过程中应对()以大众化语言给以补充解释。
A.
文化知识
B.
旅游特色
C.
使用的文言文
D.
景物风貌
【判断题】品牌定位中,价格定位是指高质量突出与竞争对手相比的高性价比,强调竞争性的价格。()
A.
正确
B.
错误
【单选题】地质学中,地质时代的基本单位顺序是?( )
A.
宙、纪、代、世、期、时
B.
宙、代、纪、世、期、时
C.
宙、代、纪、期、世、时
D.
代、宙、纪、期、世、时
【单选题】( ),华东军区海军成立,至此我军正式有了海军。
A.
1949年10月1日
B.
1949年12月15日
C.
1949年4月23日
D.
1949年10月1日
【单选题】在一般运动情况下,如下哪种物质不是主要的能量来源
A.
B.
脂肪
C.
蛋白质
D.
糖和脂肪
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