5.In North America,the Colorado(科羅拉多)River is a legend.It has sustained generations of people and many generations of wildlife.Once free,the Colorado now has many dams along its 1,450miles.Its life-giving water is divided up among seven U.S.states according to several agreements,which has caused the heaviest hit on the eco-balance of the river as no region would lose advantages compared with neighbours in the use of the river,thus inappropriate use was well expected.
The Colorado once supported a vast delta(三角洲)where it met the Gulf of California.Today the lush plantations are just memories,displaced by invasive species capable of surviving in soils poisoned by salt.The drying of the delta has huge effect on the local people.As many as 5,000people were living in the delta 400years ago.Today,about 300remain.There is a delta culture at risk of extinction,partly owing to outside job opportunities and marital mobility.However,the worsening living environment caused partly by horrible grab of the waters of the Colorado River has beaten all the other reasons.
It's easy to blame farmers along the Colorado for drawing waters from its channel to water their crops or quench the thirst of their cows.They are immediate consumers of water from the Colorado,but the truth is that we,ordinary American consumers,are all at least partially responsible.Many of us have bought products that come from the region,whether in the form of paper,hamburgers,or electronics.We live in an increasingly connected world,in which we take up"virtual water"in the form of products and even services.In the U.S.,we use twice as much water per person as the global average.
Though it may seem to work in the short term,we can barely fix the Colorado by piping water from another place.But change is urgent.Use a water calculator to see how much water you use every day.Pay special attention to saving every drop of water hidden in your diet and wardrobe.And keep away from life styles that might waste water.In all,try to form a water-efficient habit.
Besides,technology improvement will also be explored to make change happen in the rescue efforts.These technologies include methods to increase farming efficiency,and ways to replace invasive,water-sucking plants with native species.
Anyway,it's time we humans rose up and repaid the mother river that has long been nurturing us.

(Note:Answer the questions or complete the statements in NO MORE THAN TEN WORDS.)
78.What is the biggest factor to damage the Colorado nature?Coloradowater is divided up among seven U.S.states.
79.The major reason of the Delta culture disappearance isthe worsening living environment.
80.Who are the two groups of people to blame for Colorado water shortage?
81.Two ways to turn around the Colorado situation are toform a water-efficient habitand improve technology.

分析 本文講述了在北美,Colorado(科羅拉多)River 過去是一條哺育兩岸生命的母親河,但是現(xiàn)在卻遭到嚴(yán)重破壞,以此號(hào)召人類去保護(hù)它.

解答 78.Colorado water is divided up among seven U.S.states.細(xì)節(jié)理解題.第一段Its life-giving water is divided up among seven U.S.states according to several agreements,which has caused the heaviest hit on the eco-balance of the river 這句話提煉出,這條河被美國七個(gè)州瓜分,造成了嚴(yán)重的生態(tài)危機(jī).這是導(dǎo)致河流遭破壞的主要原因.
79.the worsening living environment 細(xì)節(jié)題.第二段提到delta culture 瀕臨滅絕的幾個(gè)原因,如partly owing to outside job opportunities and marital mobility,以及the worsening living environment,緊接著提及這個(gè)原因has beaten all the other reasons.由此可見,主要原因在于此.
80.Farmers along the Colorado and ordinary American consumers.概括題.第三段開頭farmers along the Colorado for drawing waters from its channel to water their crops or quench the thirst of their cows提到沿岸的農(nóng)民用水來灌溉莊家牲畜,是造成Colorado水短缺的原因之一;ordinary American consumers普通的美國消費(fèi)者也是原因.故總結(jié)為兩者.
81.form a water-efficient habit and improve technology 概括題,第四段提到如何解決水短缺的問題,比如計(jì)算每天用水量,節(jié)約每滴水,概括起來就是形成高效的用水習(xí)慣;最后一段還提到運(yùn)用科技來改善.

點(diǎn)評(píng) 本文是敘事類的閱讀表達(dá),要求學(xué)生在閱讀理解的基礎(chǔ)上,根據(jù)短文后的題目,在文中找到相關(guān)的內(nèi)容,并用簡潔、準(zhǔn)確的句子,將理解的內(nèi)容,書面表達(dá)出來.做題時(shí),注意表達(dá)的內(nèi)容不要超出規(guī)定的字?jǐn)?shù).

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