President Trump has underlined fossil fuels - especially coal - as the path to economic growth. In a recent speech in Iowa, he dismissed wind power as an unreliable energy source, But that message did not play well with many in Iowa,where wind turbines dot the fields and provide 36 percent of the state's electricity generation - and where tech giants like Microsoft are being attracted by the availability of clean energy to power their data centers.

　　The question “what happens when the wind doesn't blow or the sun doesn'tshine?" has provided a quick put-down for skeptics. But a boost in the storage apacity of batteries is making their ability to keep power flowing around the clock more likely.

　　The advance is driven in par by vehicle manufacturers, who are placing big bets on battery-powered electric vehicles. Although electric cars are still a rarity on roads now. this massive investment could change the picture rapidly in coming years.

　　While there's a long way to go,the trend lines for renewables are spiking. The pace of change in energy sources appears to be speeding up perhaps: just in time to have a meaningful effect in slowing climate change.What Washington does-or doesn't do- to promote alternative energy may mean less and less a time of a global shift in thought.

　　26.【題干】The word "plummeting"(Line 3,Para.2)is closest in meaning to ______

　　【選項(xiàng)】

　　A.stabilizing

　　B.changing

　　C.falling

　　D.rising

　　27. 【題干】According to Paragraph 3,the use of renewable energy in America ______

　　【選項(xiàng)】

　　A. is progressing notably

　　B. is as extensive as in Europe

　　C. faces many challenges

　　D. has proved to be impractical

　　28. 【題干】It can be learned that in Iowa,______.

　　【選項(xiàng)】

　　A. wind is a widely used energy source

　　B. wind energy has replaced fossil fuels

　　C. tech giants are investing in clean energy

　　D. there is a shortage of clean energy supply

　　29. 【題干】Which of the following is true about clean energy according to Paragraphs 5&6?A. Its application has boosted battery storage.B. It is commonly used in car manufacturing.C. Its continuous supply is becoming a reality.D. Its sustainable exploitation will remain difficult. 30. It can be inferred from the last paragraph that renewable energy _____.

　　【選項(xiàng)】

　　A. will bring the US closer to other countries

　　B. will accelerate global environmental change

　　C. is not really encouraged by the US government

　　D. is not competitive enough with regard to its cost

　　30.【題干】 It can be inferred from the last paragraph that renewable energy _____.

　　【選項(xiàng)】

　　A. will bring the US closer to other countries

　　B. will accelerate global environmental change

　　C. is not really encouraged by the US government

　　D. is not competitive enough with regard to its cost

　　26.【答案】 C falling

　　【解析】這是一道詞義句意題，要想知道plummeting 的意思，首先要回到原文找線索，即plummeting所在的句子以及上下句，由原文可知，plummeting所在句子是在說現(xiàn)在例如風(fēng)能和太陽能這樣的可再生資源的價(jià)格的問題，plummeting是修飾可再生資源的價(jià)格的，接著二段最后一句就在用具體數(shù)字來證明可再生資源的成本在下降，如太陽能成本下降了百分之八十，風(fēng)能也降到三分之一，由此可知，可再生資源的成本在下降，plummeting的含義是下降的意思。所以選擇C falling。

　　27. 【答案】A is progressing notably

　　【解析】這是一道具體細(xì)節(jié)題，根據(jù)題干關(guān)鍵詞定位至第三段第三句及第四句，意思是“在中國和歐洲等國家已經(jīng)領(lǐng)先時(shí)，美國也在見證著巨大的改變。根據(jù)美國能源信息局報(bào)道，三月份，美國首次使用風(fēng)能和太陽能產(chǎn)生了超過百分之十以上的能源�！边@足以說明在美國，可再生能源的使用正在取得顯著地進(jìn)步。所以答案是A。

　　28. 【答案】 A wind is a widely used energy source

　　【解析】這是一道細(xì)節(jié)推斷題，根據(jù)題干關(guān)鍵詞定位至第四段第三句，在愛荷華州，風(fēng)力渦輪機(jī)點(diǎn)綴著這個(gè)州并提供了此州百分之三十六的電能，并且還吸引了像微軟這樣的科技巨頭公司。因此可判斷，在愛荷華州，風(fēng)能是一種廣泛使用的能源。所以答案是A。

　　29.【答案】 C its continuous supply is becoming a reality