We’re reading a book or opening an envelope when, all of a sudden, there’s a sharp pain on our finger. You see a little bit of blood and realize you’ve just gotten a paper cut.
Dr Hayley Goldbach, a resident dermatologist at UCLA Health, spoke about why paper cuts are so jagged, how the element of surprise leaves us in more pain and how to make sure they heal quickly.
Dr Goldbach explained that one reason paper cuts hurt so much is where they occur: primarily on the finger. We have nerve endings all over the body, "she said. "In places where there is refined movement and sensation--like the lips or tips of the fingers-they have a high density of nerve endings. ” These nerve endings are known as nociceptors and they send signals to the brain about things that could cause a break in the skin, such as extreme hot or cold temperatures and chemicals.
Another reason why paper cuts hurt so much is that you re using your hands throughout the day meaning that the wound is constantly getting opened. "You often get paper cuts on the pad or the tip of the finger, different from where you d get a knife cut, "said Dr Goldbach. " It's hard not to use your hands, so there’s constant pressure on the wound without u chanee for it to heal. "
“The paper itself is another reason why these superficial cuts leave us in so much pain. Paper might look and seem smooth but, if you study it under a microscope, the edge is actually jagged. "Paper is quite sharp jagged-it's a bit of serrated edge, "said Dr Goldbach. "It cuts you pretty quickly before you have the chance to realize it. ”
Additionally, paper cuts are quite shallow, which makes them even more annoying to deal with.
Dr Goldbach added that there are mental and emotional elements that cause paper cuts to hurt more than other cuts. "There’s the psychological element of surprise, and it happens so quickly that you don’t have time to withdraw your hand "she said " With some other injuries, you feel pressure so you have time to react. ”
She also added that because we don’t expect to hurt ourselves while working with paper, the surprise of cuts leaves us in further pain. "We tend to be careful with a knife-you’re being careful on purpose: because you know there: s a danger, "said Dr Goldbach. While we are careful with knives, we are not so careful with paper.
1.The underlined word "jagged" is closest in meaning to ______.
A. sharp B. not dull
C. not rough D. not smooth
2.How many reasons why paper cuts hurt so much are mentioned in the passage?
A. Three. B. Four.
C. Five. D. Six.
3.What will the following passage be about?
A. How to deal with paper cuts.
B. How to prevent paper cuts.
C. how to make sure paper cuts heal quickly.
D. The different pains caused by knife cuts and paper cuts.
In Canada, rights come with responsibilities. ' These include:
Obeying the law—one of Canada’s founding principles is the rule of law. Individuals and governments are regulated by laws and not by arbitrary actions. No person or group is above the law.
Taking responsibility for oneself and one's family—getting a job, taking care of one's family and working hard in keeping with one's abilities are important Canadian values. Work contributes to personal dignity and self -respect, and to Canada's prosperity.
Serving on a jury—when called to do so. you are legally required to serve. Serving on a jury is a privilege that makes the justice system work as it depends on impartial juries made up of citizens.
Voting in elections—the right to vote comes with a responsibility to vote in federal provincial or territorial and local elections.
Helping others in the community—millions of volunteers freely donate their time to help others
without pay -helping people in need assisting at your child’s school volunteering at a food bank or other charity, or encouraging newcomers to integrate. Volunteering is an excellent way to gain useful skills and develop friends and contacts.
Protecting and enjoying our heritage and environment—every citizen has u role to play in avoiding waste and pollution while protecting Canada’s natural, cultural and architectural heritage for future generations.
1.Which of the following may be the best title of the passage?
A. Rights of Citizenship in Canada
B. Responsibilities of Citizenship in Canada
C. Different laws and regulations in Canada
D. Rights coming with responsibilities in Canada
2.Which is NOT true according to the passage?
A. Work can help one to win respect.
B. Canadian law requires its citizens to serve on a jury.
C. Volunteering is a better way to develop friends.
D. All citizens have the responsibility to protect Canada’s architectural heritage.
After a long time of struggling with lung cancer, my father passed away, due to which, my life ______ a lot after my fathers death. As the eldest son in my family, I took the responsibility of raising the family. In order to ______my sick mother and two younger brothers, I couldn’t help but ______ school and work to support my family. It seemed to me that life was always hard at that time. However, a thread of hope flashed in those ______ days. It was a rainy dusk when I exposed myself to the rain and walked in the street.
Suddenly the rain stopped! ______, I looked up, only to find that "the sky" was in fact a dark blue ______. Then came a deep voice. "Why not run ______an umbrella? "A middle -aged man with one leg on crutch(拐杖) said to me, “ run in the rain, and you will get ______. I shook my head with politeness, but his words shocked me deeply. Without my father's ______, could I only be a slave to the fate(命运)?
While ______ together in the rain, i knew he was a promoter from the city. Having received an order from his company, he had to spend ______ time on it. Looking at this guy. i had no sympathy but ______. I took the umbrella from his hand and walked with him all the way. He told me he once had ______ of being a policeman, but an accident ______his dream. His present work was ______ and was not his cup of tea, however, every travelling was a wonderful start to him. To his happiness, he never ______ heart and still “ran” on the road of life…
____what the man remarked, I headed for a southern city and became an insurance representative. After two years’ running, I got ______ and the life condition in my family ______ better gradually.
Everything is so simple: to run without an umbrella! Only when you ______ the rainy season of your life will there be bright sky ahead of you. Never give up!
1.A. affected B. suffered C. damaged D. managed
2.A. take care B. attend to C. watch out D. bring up
3.A. desert B. stop C. quit D. dismiss
4.A. bright B. white C. colorful D. dark
5.A. Interested B. Confused C. Excited D. Disappointed
6.A. umbrella B. raincoat C. hat D. jacket
7.A. with B. without C. for D. to
8.A. drier B. warmer C. less wet D. less cold
9.A. praise B. comfort C. protection D. attention
10.A. running B. wandering C. jogging D. walking
11.A. much B. no C. little D. some
12.A. admiration B. envy C. appreciation D. care
13.A. approved B. longed C. spoken D. dreamed
14.A. defeated B. damaged C. ruined D. wiped
15.A. boring B. demanding C. rewarding D. tiring
16.A. lost B. took C. changed D. gathered
17.A. Amused B. Terrified C. Encouraged D. Shocked
18.A. my way B. my start C. my end D. my future
19.A. turned out B. worked out C. carried out D. turned into
20.A. run into B. run across C. run away with D. run out of
—Tom, what a pity. I almost succeeded yesterday.
—I told you to be careful before. ______.
A. One false step will make a great difference.
B. Where there's life, there's hope.
C. Never put off till tomorrow what you can do today.
D. One tree does not make a forest.
The commercial city, Loulan, used to be a stopping point on the silk road between the West and the East, ______ by sandstorms from AD200 to AD 400.
A. which is believed to be covered over
B. as is believed to have been covered over
C. it is believed to be covered over
D. which is believed to have been covered over
As is proved, real effective exchange rate appreciation will help improve our country's industrial structure in the long run, though it ______ some short-term pressure on employment.
A. contributes to B. brings in
C. results from D. gives rise to
