题目内容
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Read the Methodology section of this article. There are three paragraphs in 3.1 (M1, M2 and M3) and 5 paragraphs in 3.2 (M4, M5, M6, M7 and M8). What did the authors do to respond to the problems with ordinary least squares (OLS)？
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A、lime, cement, gypsum
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D、asphalt, lime, gypsum
| 阅读表达。 |
| Each and every one of us is responsible for the greenhouse should the need arise-as it almostpected, and is prepared to tion, something comes along to gases we give out in our daily actions and choices． Therefore,combating climate change is going to take the combined efforts of everyone on the planet． The average household carbon footprint in China is 2.41 tons of carbon dioxide annually．That's enough to fill half an Olympic swimming pool． Surprised？ Well,．here's how you can work to reduce it: 1．Take showers rather than baths and reduce your shower time by two minutes．This will save water and give you an extra two minutes in bed． 2．Don't purchase unnecessary clothes,and be careful about the materials you buy．Wool and cotton have a really high greenhouse gas impact．Manmade fibers are a better choice． 3．Try to buy high-quality,long-lasting products even though they____．A laptop is more efficient than a desktop,and a small screen TV is better than a big flat-screen． 4．Only turn the water heater on when necessary,and adjust temperature controls to avoid overheating．Put a lid on a pan when boiling water． 5．When using the washing machine,be sure there's a full load and turn the temperature down if it's not really dirty． 6．The greediest home device along with the washing machine is the fridge．Make sure it's as efficient as possible by keeping it out of direct sunlight and away from the oven or heater．Don't put food in when it's still warm． 7．Only buy the amount of food you need and if there are leftovers,get creative．For instance,make them into a soup．Ask to take food home from restaurants if there's some left,but remember to take your own container to avoid using a disposable carton． 1．How does the author introduce the topic of the text？(no more than 5 words) ____ 2．Fill in the blank in Paragraph 6 with proper words．(no more than 5 words) ____ 3．Why do we keep the fridge out of direct sunlight？(no more than 5 words) ____ 4．What does the author say about leftovers？(no more than 14 words) ____ ____ 5．What is the main idea of the text？(no more than 6 words) ____ |
Some growth stems from a commitment by governments and farsighted businesses to fund cleaner energy sources. But increasingly the story is about the plummeting prices of renewables， especially wind and solar. The cost of solar panels has dropped by 80 percent and the cost of wind turbines by close to one-third in the past eight years.
In many parts of the world renewable energy is already a principal energy source. In Scotland， for example， wind turbines provide enough electricity to power 95 percent of homes. While the rest of the world takes the lead， notably China and Europe， the United States is also seeing a remarkable shift. In March， for the first time， wind and solar power accounted for more than 10 percent of the power generated in the US， reported the US Energy Information Administration.
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’t shine？” has provided a quick put-down for skeptics. But a boost in the storage capacity of batteries is making their ability to keep power flowing around the clock more likely.
The advance is driven in part 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 at a time of a global shift in thought.
The word “plummeting”（Line 3， Para. 2） is closest in meaning to .
A.stabilizing
B.changing
C.falling
D.rising
It can be inferred from the last paragraph that renewable energy____.A.will bring the USA closer to other countries.
B.will accelerate global environmental change.
C.is not really encouraged by the USA government.
D.is not competitive enough with regard to its cost.
According to Paragraph 3， the use of renewable energy in America .A.is progressing notably
B.is as extensive as in Europe
C.faces many challenges
D.has proved to be impractical
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.
It can be learned that in Iowa， .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
A、K should be at least 10 to remove unwanted statistical fluctuations.
B、Pick 10 to 20 appears to work well in general.
C、Pick the upper bound value for k as the maximum of “close by” objects that can potentially be global outliers.
D、Pick the upper bound value for k as the maximum of “close by” objects that can potentially be local outliers.
A、Una persona que carga plantas a su espalda.
B、Una persona que cosecha cereales.
C、Una persona que cultiva cereales.
D、
A、I6
B、I7
C、I8
D、I10
A、Chronological order
B、Spatial order
C、Topical order
D、In order of importance
A、summary of the findings
B、significance of the study
C、implications of the study
D、recommendation for further research
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