Losing a baby tooth can be fun for a kid. You can put it under your pillow and look forward to finding some money there in the morning. And then you can watch your new permanent(永恒的) tooth grow in its place.
But if a permanent tooth falls out, that’s a problem. There isn’t another one under the gum(齿龈) that can replace it. Unfortunately, this happens to some older people. And if permanent teeth fall out or need to be pulled, an older person might need dentures(假牙).
Dentures, known as false teeth, are a set of replacement teeth for any teeth that are missing. There are partial dentures, which take the place of only a few teeth and prevent the others from changing position. If all the teeth are gone, the person would need complete dentures, which replace every tooth in the mouth.
Dentures can cause pains at first and take little time to get adjusted to. They also need special care. They should be brushed daily with a special denture brush and cleanser and soaked(浸泡) in denture solution when not in the mouth.
Dentures are important for the old because, without teeth, it’s hard to smile, talk, and eat properly. But it can be a little weird if you see someone take out his or her dentures. It can also be strange to see someone, like a grandparent, without dentures in because he or she won’t have any teeth. Try not to make fun of the person because this could cause hurt feelings.
People usually lose their permanent teeth due to periodontal disease(牙周炎), or gum disease, which is caused by bacteria that attacks the gums. Diseased gums aren’t strong and healthy, so teeth can get loose and fall out. Older people often have many cavities(洞) that have been filled over the years, and these fillings can weaken over time, leading to more tooth problems.If one of your baby teeth falls out, you .
| A．should have a false tooth fixed in its place |
| B．have to put it under your pillow at once |
| C．will gain a permanent tooth in future |
| D．can exchange it for some money |
A person wearing dentures .
| A．should brush them with a special denture brush every few days |
| B．will take a very long time to adjust himself or herself to them |
| C．will experience unpleasant feelings at the beginning of fixing them |
| D．should use denture solution to soak them in his or her mouth |
What does the underlined word “weird” mean in the fifth paragraph?
| A．inconvenient | B．excited | C．uncomfortable | D．impolite |
One Sunday, my family had gathered at my parents’ house to feast upon Mom’s wonderful cooking．During the normal dinner chatter, I noticed that my father was slurring （说话含混） his words．No one mentioned this during dinner, but I felt compelled to discuss it with my mother afterward．
We decided that there was something seriously wrong and that Dad needed to see the doctor．
Mom phoned me two days later．“The doctor found a brain tumor （肿瘤）．It’s too large at this point to operate．Maybe they can do something then, but the odds are long．”
Even with the treatment, my father’s condition worsened, and the doctor finally informed us that this condition was terminal．During one of his stays in the hospital, we brought our baby daughter Chelsey with us when we visited him．By this time he had great difficulty speaking．I finally figured out that he wanted Chelsey to sit on his stomach so he could make faces at her．
Watching the two of them together, I realized I was living an experience that would stay with me forever．Though grateful for the times they could share, I couldn’t shake the feeling of a clock ticking in the background．
On the visit to my parents’ home during what we all know was my father’s last days, my mother took Chelsey from my arms and announced, “Your father would like to see you alone for a minute．”
I entered the bedroom where my father lay on a rented hospital bed．He appeared even weaker than the day before．
“How are you feeling, Dad?” I asked．“Can I do anything for you?”
He tried to speak, but he couldn’t make out a word．
“I’m sorry, but I can’t understand you,” I said．
With great difficulty he said, “I love you．”
We don’t learn courage from heroes on the evening news．We learn true courage from watching ordinary people rise above hopeless situations．In many ways my father was a strict, uncommunicative man．He found it difficult to show emotion．The bravest thing I ever saw him do was overcome that barrier to open his heart to his son and family at the end of his life．Which of the following statements is TRUE?
| A．The writer accompanied his father to a medical examination． |
| B．The writer’s father got worse after the removal of the brain tumor． |
| C．The writer’s father had known about his illness before the writer discovered it． |
| D．The writer was quick to notice the strange condition of his father． |
What does the underlined sentence “the odds are long” mean?
| A．It takes a long time for Father to recover． |
| B．There’s little possibility for Father to recover． |
| C．Father needs love and care from his family． |
| D．They need a proper time to operate on Father． |
The father had never said “I love you” to the writer before because______．
| A．he was not used to openly showing his emotions |
| B．he was not so attached to the writer |
| C．he thought there was no need to tell the writer |
| D．he believed in strictness and punishment |
What does the writer attempt to tell us?
| A．Life is short, so live your life to the fullest． |
| B．Don’t wait to see a doctor till it is too late． |
| C．Bravely express your love for your family． |
| D．We don’t often value health until we lose it． |
According to body language expert Robert Phipps, the way people sleep at night actually determines a lot about the type of personality they have. Phipps has identified four sleeping positions that affect personality.
Phipps found that worriers, those who stress the most, tend to sleep in the fetal(胎儿的) position. He found that this is the most common bedtime position, with nearly 58 percent of people sleeping on their side with knees up and head down. The more we curl up(蜷曲), the more comfort we are seeking, according to Phipps.
The second most common position is the log. Sleeping with a straight body, with arms at each side, as if they are standing guard at Buckingham Palace, indicates stubbornness, and these people (the 28 percent who sleep this way) often wake up stiffer than when they went to sleep.
"The longer you sleep like this, the more rigid your thinking is and you can become inflexible, which means you make things harder for yourself," according to Phipps.
Yearner(向往型) sleepers are next on the list. About 25 percent of people sleep in this style — on their side with arms stretched out in front, looking as if they are either chasing a dream or perhaps being chased themselves. Yearners are typically their own worst critics, always expecting the best results, explained Phipps. These people often wake up refreshed and eager to face the challenges of the day ahead.
Perhaps the most peculiar(奇怪的) of sleep styles is the freefaller position. This sleep style makes up 17 percent of the population. They sleep face down with arms stretched out. These people, according to Phipps, feel like they have little control over their life. Not only is this the strangest of sleep styles, but also the least comfortable, and people may wake up feeling tired and have no energy.
In conclusion, Phipps has only one more thing to add: "A good night’s sleep sets you up for the following day and our sleeping positions can determine how we feel when we wake."Which of the following pictures is the fetal position?
The underlined word "rigid" is closest in meaning to "".
| A．stubborn | B．flexible | C．comfortable | D．strange |
Which sleeping position indicates that the sleeper tends to seek perfection?
| A．The fetal position. | B．The log position. |
| C．The yearner position. | D．The freefaller position. |
Which of the following shows the structure of the passage?
CP: Central Point P: Point Sp: Sub-point C: Conclusion
A clinic in West Kalimantan, Indonesia, works to support the health of people and forests.
Kinari Webb is an American doctor who helped start the non-profit group that operates the clinic. The group is known as ASRI. Dr. Webb says most communities value the local forests, but illegal logging(伐木) was often their only way to earn money to pay for health care. "Villagers know that if they protect the forest, that’s good for their long-term well-being. But if they have no money to see a doctor, they have to do illegal logging," said Dr. Webb.
The clinic is in Sukadana, a village outside Gunung Palung National Park. Each month someone from ASRI visits the surrounding villages to see if they are actively logging or burning land within the park. Communities that do not take part in illegal logging pay about 40 percent less for health care than those that do. Also, the clinic uses a barter system. Patients can pay with things like handmade baskets, labor exchanges, young trees or fruit they grow.
Patients learn about environmental conservation as they wait to register at the clinic. Many of the 70 staff members also help communities learn about organic farming and other ways to earn money. In May, ASRI started a program to identify forest "guardians". These guardians work with the community to try to prevent illegal logging. One of the guardians says he entered the program because ASRI helped his son recover from tuberculosis(肺结核).
The clinic is small, but very busy. However, people did not trust the clinic at first. They wanted to go to the only hospital in the area. Yet its resources are limited and villagers often have to travel more than two hours to get there.
Now, people happily share stories about the clinic. Amelia’s mother is one of them. She started going there when her daughter was eight months old. She says the treatment is good. Dr. Webb smiled when she heard that.
Dr. Webb said: "Health care is an incredible key. And everyone everywhere around knows that we really care and that we are helping save their lives."A barter system is a system in which.
| A．people trade by the exchange of goods |
| B．patients can receive a free treatment |
| C．customers pay the goods in cash |
| D．trees are taken good care of |
Kinari Webb set up the clinic for the following purposes EXCEPT.
| A．treating the local patients |
| B．protecting the forests |
| C．teaching people about organic farming |
| D．forcing the only hospital out of the area |
We can infer that.
| A．only a few people went to the clinic at the beginning |
| B．the clinic is well equipped |
| C．Amelia’s mother is not satisfied with the medical service |
| D．the only hospital in the area is of poor service |
Scientists have long understood the key role that oceans play in regulating the Earth’s climate. Oceans cover 70 percent of the globe and store a thousand times more heat than the atmosphere does. What’s newer is the understanding of how this key component of our climate system responds to global warming.
A brake on global warming — for now
One of oceans’most important climate functions is absorbing heat and carbon dioxide (CO2), one of the gases that cause global warming. Acting as a heat sponge (海绵), oceans have absorbed huge amounts of heat and CO2 in the last forty years.
Fujita explains that "oceans are saving us from faster climate change — they are a big flywheel that delays rapid overheating of the Earth, putting a brake on the climate system."
"That’s the good news," he adds. "The bad news is that oceans only slow the atmospheric warming. Once oceans come to balance with a greenhouse gas warmed earth, the extreme heat will remain in the atmosphere and things will get much hotter." But where and how oceans release this accumulated (积累的) heat is uncertain. And as oceans store heat, fragile underwater ecosystems are struggling.
The most recent scientific report from the Intergovernmental Panel on Climate Change (IPCC) also notes with concern that oceans are acidifying because of increased absorption of atmospheric CO2, and thus causing a threat for shell-forming species. Sharp increases in carbon dioxide levels will cause further acidification of oceans.
Currents distributing heat
Another important role oceans play is that of distributor. Oceans deliver heat and life-sustaining nutrients around the globe. Just as blood vessels bring oxygen and nutrients to cells in the human body, oceans’ currents carry oxygen, nutrients and heat throughout the Earth. Oceans distribute 25 percent to 50 percent of the energy the planet receives from the sun. For example, the Gulf Stream carries heat across the Atlantic. This warm current gives northwestern Europe a milder climate than it would normally have so far north. A change to oceans’ circulation (循环) patterns could throw Europe into a colder period, even as the rest of world experiences warmer temperatures.We can infer from the passage that .
| A．oceans cause global warming |
| B．oceans stop global warming |
| C．oceans release nutrients and heat |
| D．ocean ecosystems face more dangers |
From the passage we can learn that oceans’ currents .
| A．produce oxygen and nutrients everywhere |
| B．absorb 25% to 50% of the energy from the sun |
| C．distribute heat and nutrients around the globe |
| D．change oceans’ circulation patterns |
Which of the following is NOT the result of oceans absorbing heat and carbon dioxide?
| A．It causes further acidification. |
| B．It affects shell-forming species. |
| C．It makes the atmosphere hotter. |
| D．It regulates the Earth’s climate. |
This passage mainly talks about .
| A．the roles of oceans | B．global warming |
| C．ocean currents | D．carbon dioxide |
The National Geographic Channel has unearthed a time capsule (时光宝盒) buried by late Apple chairman and co-founder Steve Jobs thirty years ago.
The time capsule was buried in Aspen, Colorado, in 1983, shortly after Jobs attended the International Design Conference being held in that city. Organizers called the device the Aspen Time Tube and contributed items like Rubik's cubes(魔方) and some iconic music. Jobs added his own items to the capsule, including the " Lisa" ( also known as an "Apple" ) mouse" he used for his presentation at the conference.
Younger readers may not recognize the name but the Lisa Apple mouse was one of the first commercial mice released to consumers. The mouse was specially designed for the Apple Lisa computer. It's also the first personal computer to offer users a graphical user interface(图形用户界面)
Initially, the plan was to dig up the time capsule in the year2000, but organizers forgot its exact location. Recently, they brought in researchers working with the National Geographic Channel show Diggers to find the device. Eventually they came across the 13-foot-long, 1.5-foot-diameter tube. Inside they found a lot of 1980s artifacts(人工制品)that are still being catalogued.
“When the end came off, literally things just poured out.” noted Diggers host Tim Saylor "There must be literally thousands of things in there.”
“They had the foresight to put a bunch of stuff in plastic bags." Saylor said. “I could see at least a dozen plastic bags and other items. But I know for sure there got to the photographs in there. People had hand-written things on the back of the photographs, so there will be some really interesting things inside.”
Among the artifacts researchers expect to discover inside: a Steve Jobs speech in which the Apple visionary outlines his predictions for future technologies. We should know more about the researchers, discoveries once the Diggers program airs this fall.Which of the following is true about the Lisa mouse?
| A．The mouse was the first commercial one for consumers. |
| B．The mouse was created only for the Apple Lisa computer. |
| C．The mouse was buried in Aspen, Colorado for two decades. |
| D．The mouse was invented after the International Design Conference. |
Why wasn't the time capsule dug up in 2000?
| A．Because it was not the time set by Steve Jobs. |
| B．Because it could not be accurately located. |
| C．Because organizers forgot its precise shape. |
| D．Because the local government didn't approve. |
From the passage we can infer that_______.
| A．there were some special photographs found-inside the time capsule |
| B．a Steve Jobs speech with future predictions was found inside the cap |
| C．Steve Jobs predictions for future technologies have come true |
| D．more about the capsule will be discovered in the Diggers program |
The best title for the passage might be _______.
| A．The "Lost" Steve Jobs Time Capsule |
| B．The Mystery of Steve Jobs Speech Solved |
| C．Steve Jobs' 1983 Time Capsule Recovered |
| D．Co-founder & Former Apple CEO Steve Jobs |