It encouraged us to visit Quora.com, the online question and answer community, to find out how users get the most out of every tank of gas.
Light makes right
Alex Elderfield noted that excess weight prevents an engine from burning fuel efficiently. "Only carry what is essential in your car, clean out any junk or necessary items otherwise you are paying for the fuel to cart these from place to place," he wrote.
Driving smoothly — that is, not mashing the gas and then slamming the brakes later down the road — was a fixture of many responses. Quora user Clint Law agreed on that advice, who wrote, "Every little bit of kinetic energy that your brakes lose, your engine burned in fuel to build up." Overbraking should consequently be viewed as wasted acceleration. "That's really what kills your fuel economy," he argued.
Keep the pressure up
Keeping the recommended tire pressure for your car was another mantra among Quora users. Marlyn Rosent said she checked her tire pressure every time she filled up her SUV. Quora user Doug Dingus checks his tire pressure every weekend. “Less tire contact means reduced rubbing, requiring less fuel,” he said.
Air conditioning or windows
Though the summer heat get many drivers to roll up the windows and turn on the air conditioning, some people argued that running the A/C wastes too much gas. In between were many shades of grey.
Achilleas Vortselas said it would depend largely on a car’s speed. He wrote that as a general rule, people should drive with the windows down around the city and turn the air conditioning on when hitting the highway, where a car’s aerodynamic(空气动力的) characteristics would be influenced by opened windows.
More seriously minded people, however, said to travel as much as possible with windows up and the A/C off. Eddie Xue gets by with just a wisp of outside air. “Use the fan and open your windows every now and then at lower speeds," he wrote.
1.What can we learn from what Clint Law wrote?
A. Overbraking is a waste of gas.
B. Carry what we need in the car.
C. Build up energy to drive smoothly.
D. Stepping on the gas freely can keep a balance.
2.What do we know from Doug Dingus’ words?
A. Checking tire pressure will require less fuel.
B. Filling up the SUV leads to reduced rubbing.
C. Keeping the recommended tire pressure is necessary.
D. Braking fiercely can keep wasting acceleration.
3.The author says “In between were many shades of grey” to indicate that ________.
A. rolling up the windows and turning on the air conditioning waste too much gas
B. people should try their best to travel with windows up and the A/C off
C. when a car approaches higher speeds, the A/C should come on
D. there’s balance between the air conditioning and windows usage
4.Which is the suitable title of the passage?
A. Fuel efficiency, straight from source
B. Driving with the windows down and using the A/C
C. How to save at the pump this summer
D. Reducing the weight and increasing the vehicle’s fuel economy
The next time someone asks you where the biggest ocean is, point them toward Jupiter. While earth harbours about 320 million cubic miles(1,333 cubic km)of water, our planet is practically a desert compared to the rest of the Solar System.
A moon of Jupiter called Europa, for example, which is roughly the size of our own Moon, likely hides a subsurface ocean with more than twice as much water as there is on Earth.
Yet even that pales into insignificance in comparison to Europa's neighbour Ganymede; more than 30 times as much water as our home planet is thought to reside there as liquid and ice.
And scientists keep finding more water wherever they look. On September 28, researchers reported that Dione — a small moon of Saturn — probably has a subsurface ocean, too.
To see just how Earth stacks up against other ocean worlds, Business Insider contacted Steve Vance, a planetary scientist at NASA's Jet Propulsion Laboratory who's calculated the numbers on just how much water might be out there.
In order of how much water they have, from the least to the most, they are: Enceladus, Dione, Earth, Europa, Pluto, Triton, Callisto, Titan, and Ganymede. Mimas, a moon of Saturn, and Ceres, the largest asteroid in the Solar System, are also thought to have subsurface oceans —but scientists aren't yet sure how big each one might be.
1.How many stars are mentioned in this passage?
A. Eleven. B. Twelve.
C. Thirteen. D. Fourteen.
2.What can we know according to the passage?
A. Compared with the Solar System, Jupiter looks as if it is a desert.
B. Ganymede is thought to be covered with more water than Europa.
C. Business Insider is a planetary NASA’s laboratory of Steve Vance.
D. Ceres harbours the largest subsurface ocean in the Solar System.
3.What does the passage mainly tell us?
A. The order of how much water the stars have has been figured out.
B. Scientists keep exploring more water in the universe wherever they look.
C. These ocean worlds reveal just how little water we have on Earth.
D. NASA’s planetary scientists are calculating the water numbers in the sky.
假如你是红星中学高三学生李华。你的美国笔友Chris在给你邮件中提到他最近在准备SAT考试（美国高考），心理压力很大，很苦恼，希望得到你的帮助。请你给他回信，内容包括：
1．安慰对方；
2．分析心理压力过大会导致的后果；
3．给出相应的建议及其理由。
注意：词数不少于100。
Dear Chris,
_______________________________________________________________
Yours,
Li Hua
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在其下面写出该加的词。
删除：把多余的词用斜线(＼)划掉。
修改：在错的词下画一横线，并在该词下面写出修改后的词。
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者(从第11处起)不计分。
I am honored to have the chance to write for you. I have noticed that our school has very limited resources in term of students’ opportunities to do sports.
It is known to all what sports are very important to young people. If they have an access to good sports facilities, young people can adopt a healthy lifestyle and become more confident.
I suggest build a new playground, where should be designed for students with different interests. They should have a different section for each activity and available to students all year round. I believe so a sports area will meet our sporting needs.
Thanks for your reading.
S. T. Harvey wrote a children’s book Miracle, a fictional story about trying to fit in when you stand out. Since it was released earlier this year, the book 1. (appear) in classrooms and libraries 2. the country, bringing with it 3. powerful message about the importance of kindness.
4. (base) on a true story, the book tells about a boy named Auggie, 5. was born with a misshapen face that has required many 6. (operate) in the 10 years since his birth. 7. being homeschooled since kindergarten, he starts fifth grade at a public school. It isn’t easy being the new kid, especially since Auggie looks different from everybody 8.. The book takes readers on a journey, as Auggie and his community learn about 9. (friend) and acceptance.
Harvey worked as an art director and graphic designer for more than 20 years before she 10. (inspire) to write Miracle. Now she is using the book to promote the impact of kindness.
When I was a boy growing up, we lived across a river from the main road next to a set of rail road tracks. The only way to our house was across a _______. Our only neighbor, Frankie, lived in a(n)_______house on the hillside behind our home. His house, _______, was over a hundred years old.
Frankie was already nearly 80 years old when I was _______. He was a first generation, Italian immigrant who had never married. He had _______on the railroad for over 40 years before retiring but still worked hard every day. I would watch him with _______grow plants on hillsides. Frankie was _______by today’s standards. He had no electricity or running water and would _______once a week with water he boiled. I never seemed to_______the smell when I visited him, though. His ________remained broken even after all his years in America but somehow I never had any trouble ________him.
Frankie also ________ me in my spiritual growth. He did this mainly by ________. He never lectured or taught. He just showed me how to live with honesty, kindness, and goodness. He showed me the joy of nature, the ________that can come from just sitting outside on a sunny day.
When Frankie ________, we found he had over 40,000 dollars in the bank, a ________at that time, from a lifetime of saving. It was sent to his brothers and sisters________living in Italy. We often wondered why he hadn’t used it to buy a better home and live more ________. Looking back now, however, I know the ________. He had food, shelter, clothes, and warmth both in his house and in his spirit. He ________nothing more to be happy in his life.
1.A. street B. board C. map D. bridge
2.A. open B. empty C. old D. dark
3.A. in fact B. at first C. above all D. as usual
4.A. employed B. born C. prepared D. educated
5.A. worked B. waited C. walked D. traveled
6.A. delight B. amazement C. regret D. patience
7.A. weak B. careless C. poor D. smelly
8.A. dive B. swim C. bathe D. practice
9.A. mind B. bear C. have D. take
10.A. heart B. English C. life D. time
11.A. understanding B. finding C. believing D. improving
12.A. served B. guided C. held D. accepted
13.A. nature B. choice C. order D. example
14.A. courage B. wealth C. peace D. strength
15.A. failed B. returned C. settled D. died
16.A. record B. secret C. fortune D. success
17.A. still B. also C. again D. often
18.A. actively B. comfortably C. safely D. quietly
19.A. method B. process C. chance D. answer
20.A. managed B. changed C. needed D. explained
