阅读理解。 How to wash clothes in a
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| 阅读理解。 |
How to wash clothes in a flash
LAUNDRY is never an easy part of housework. But if piles of sweaty (汗水浸湿的) T-shirts and
smelly socks drive you crazy, then two Chinese scientists might have the answer.
Long Mingce and Wu Deyong of Shanghai Jiao Tong University have invented a kind of cotton that
cleans itself. No need for soap or water, the scientists say. All you have to do is put the clothes out in the
sun.
According to the Guardian, this magical self-cleaning ability comes from a special chemical mixture.
The material is covered with this mixture. It can break down dirt and remove bad smells after only a few
hours in the sun.
One of the chemicals is called titanium dioxide (二氧化钛). Scientists have known for some time that
titanium dioxide can clean fabrics (织物). However , it only works under ultraviolet (紫外的) light and so
is not yet widely used - ultraviolet light cannot be seen.
"We knew that self-cleaning cotton fabrics with titanium dioxide coating had already been developed,
but they cannot work, or they work weakly, under sunlight," Long said. "If we want to use the fabrics in
daily life, we must develop cotton that cleans itself under daylight."
The scientists worked hard for years to find a better chemical. Finally , they added silver iodide (碘化银) into the mixture. This made the chemical reactions in sunlight faster. The new mixture is also nearly
seven times better than the former one with pure titanium dioxide at removing dirt and killing bacteria.
The experiment was only carried out on cotton clothing. However, according to Long, the technology
can be "applied to all kinds of fabrics and their related products." It is also cheap and environmentally
friendly , he said.
The self-cleaning material is not yet ready for the market. Scientists still need to know whether it could
harm people. Although titanium dioxide is used in some foods, it can cause health problems if it gets into
the lungs (肺). Scientists need to make sure it is safe before we can start to enjoy the benefits of this
technology . |
| 1. Thanks to this new discovery, we will be able to clean fabrics ___ . |
A. using soap and water
B. using silver iodide
C. using sunlight
D. using moonlight |
| 2. In what way is the new material better than previous materials ? |
A. It works using any kind of light.
B. It works more quickly and effectively.
C. It is widely found in nature.
D. It can be used for all kinds of fabrics . |
| 3. What might be a problem with the self-cleaning material ? |
A. It will cause pollution.
B. It costs too much to produce.
C. It breaks down easily in the sun.
D. It might cause health problems |
| 4. Which of the following statements is TRUE? |
A. There may be many other kinds of self-cleaning fabric in the future .
B. We can already buy self-cleaning clothes on the market.
C. This was the first time that scientists discovered titanium dioxide.
D. Titanium dioxide is widely used in the food industry. |
答案
| 1-4: CBDA |
举一反三
| 阅读理解。 |
THE first night in Yosemite had been awful. I hadn"t been able to sleep and I was stuck in a too small
tent with my wife and two kids. "Things haven"t worked out," I said to myself. But, like so many other
things I complain before my morning coffee, this one was ridiculously off-key. Things weren"t bad;
they were good.
A hundred yards(91 meters) away was Summit Lake, with its wonderful early morning mists (薄雾)
shimmering (闪烁微光)off the water. A couple of miles to the southwest was the base of the Lassen
Peak Trail. The base was 8,000 feet (2,400 meters) above sea level, huge snow banks dotting (点缀)
the place even in mid August. It was beautiful. We fired up the camp stove, got out our cold boxes from
the heavy metal locker(储物柜),fired up some bacon, cut open some bread, and boiled up a cup of coffee.
Half an hour later, my 6-year-old daughter and I were in the parking lot of the Lassen Peak Trail,
getting ready to hike. We wouldn"t make it all the way- young legs get pretty tired on a steep mountain
path, but it didn"t matter. We would see great views spread out below us, the volcanic ash (火山灰) that
layered on the earth turning the melting snow a mysterious pink as the sun struck it.
Later, on the hike, I felt stupid about my morning complaints. Everything had been worthwhile. It gave me enormous satisfaction to see my daughter so excited about the view from the mountain.
Yes, camping is uncomfortable. But there"s also something wonderful about being so close to nature.
Just as importantly, there"s something about getting young children out of their increasingly
technology-filled comfort zones and forcing them to encounter the non-cyber (没有网络的)world
around them.
We lose something when we spend all our time cocooned (束缚) inside a carefully constructed
modernity, when read about daily affronts (冒犯) to the environment, yet don"t fully realize what is at risk,
removed as we are from nature. It"s a good thing to reconnect every so often with the Great
Outdoors.
By Sasha Abramsky |
| 1. How did the author first feel about camping in Yosemite? |
A.Uncomfortable.
B. Shocked
C. Wonderful
D. Excited |
| 2. By saying "this one was ridiculously off-key" in the first paragraph, the author means that "____". |
A.he had lost his key
B. this was meaningless
C. this was quite unusual D. this was far from the truth |
| 3. Which of the following is TRUE according to the article? |
A. The author seldom complains in the early morning.
B. The author walked all the way to the Lassen Peak Trail.
C. The view from the mountain impressed the author"s daughter.
D. The author hiked to the top of the mountain to get a better view. |
| 4. With the article, the writer tries to send the message that _______. |
A. It"s great to walk outdoors and get close to nature.
B. It"s advisable to be well prepared before going camping
C. Technology causes much harm to human society
D. We should not break the balance of nature |
| 阅读理解。 |
Psychologists in Britain have said that the last full week of January is the most depressing time of year
and labeled next Monday "Blue Monday". 1
Mondays are generally seen as the worst day of the week because people feel tired at having to go
back to work after a weekend with a different sleep pattern. There are various reasons why more people
feel depressed at this time of year. Many people have unpaid credit card bills for the Christmas presents
they bought, and pay day is often not until the end of the month.
2 People feel stressed because they have to go back to real life--work and commuting (go to work
by bus); and they may be unhappy with their body image after bingeing (大吃大喝) on booze, chocolates, and other food at Christmas-time. People may have already failed in their New Year"s resolutions, such
as give up smoking. The bad weather in January can also contribute to people feeling tired.
3 They offered advice for any staffs who are feeling depressed. They hope that helping people as
soon as there are signs of depression will avoid absenteeism(旷工).Evidence shows that unreasonable
managers who lead to their staff feeling tired at this time can expect an uncooperative workforce.
However, it"s not all bad! 4 They think that things can only get better. Psychologists offer suggestions of how to avoid feeling blue. These include spending 15 minutes doing a "gratitude exercise" thinking about and writing down what you are grateful for, such as health, family, friends and so on. Taking up a new
hobby, doing some exercise, going to bed earlier, eating a healthy breakfast, and listening to some uplifting music, are all recommended as ways to feel more cheerful.
A. The party season is over.
B. Blue is a slang(俚语) way of saying unhappy.
C. Many people feel optimistic at this time.
D. People should plan better next December.
E. Some companies are taking this quite seriously |
| 阅读理解。 |
A group of teenagers: they laugh and talk over each other, dance and make faces - you wouldn"t
believe they had just played on the same stage as famous American singers Kid Cudi and Eminem.
These seven kids, all under the age of 20, are members of the band Kids These Days (KTD).
Fresh out of high school, the band already has done things that most teens couldn"t even imagine.
They played at festivals including the recent SXSW in Austin and Lollapalooza in their hometown,
Chicago, to crowds of loyal fans.
KTD uses a mix of hip-hop, jazz, blues and classic rock to make a sound of their own.
"KTD simply mixes most, if not all of my favourite music styles," said Kamia Jones, as Chicago high
school student."I like that they aren"t afraid to be different and that their music is real and speaks to the
soul."
The band formed two years ago. Now, as well as local fans, they are becoming popular around the
world. Their facebook page is filled with supportive posts from admirers from California to Tokyo.
"It"s really strange to me that people from London, Australia and Russia... They have heard
of us and they like our music because it"s really cool feeling," says Marcie Stewart, who plays
keyboard for the band.
Despite their recent fame, KTD is a group of normal teenagers and they remain very close to one
another. While talking to the reporters, they dance and make fun of each other.
When asked what advice they would give to other teen musicians, Greg Landfair, KTD"s drummer,
said, "Keep your heart in it. Never lose the music and what you are doing, because that"s what you"re
here for. Let the music always be first." |
| 1. KTD"s music is popular among teenagers mainly because ________. |
A. it is about the strange life of teenagers
B. it mixes many music styles teenagers love into their music
C. all the band members are young and handsome
D. the band members dance and make fun of each other |
| 2.What do we know about KTD? |
A. They are all of the same age.
B. They are as famous as Kid Cudi and Eminem.
C. There are five members in the band.
D. They have fans around the world. |
| 3. According to Greg, teen musicians should________. |
A. make music close to their lives
B. always think of the needs of the fans
C. love the music they are playing
D. stay close to the group member |
| 4. The author wrote this article to_______. |
A. show the kind of music teenagers love
B. encourage young musicians to play music
C. describe a special music style
D. introduce a successful band of teenagers |
| 阅读理解。 |
A Letter from Steve Jobs
August 24, 2011
To the Apple Board of Directors and the Apple Community,
I have always said if there ever came a day when I could no longer meet my duties and expectations as
Apple"s CEO, I would be the first to let you know. Unfortunately, that day has come.
So I resign (辞职)as CEO of Apple. I would like to serve, if the Board feels fit, as Chairman of the
Board, director and Apple employee.
As far as my successor goes, I strongly suggest that we name Tim Cook as CEO of Apple.
I believe Apple"s brightest days are ahead of it. And I look forward to watching and contributing to its
success in a new role.
I have made some of the best friends of my life at Apple, and I thank you all for the many years of being
able to work alongside you. | | 阅读理解。 | A. It can protect your brain from being hurt in a bike accident
B. Go for bike rides with your kids so you can show them what safe riding looks like
C. Never wear ear-phones while biking
D. You have to choose good shoes
E. Check your child"s bike to keep it safe and in good condition |
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