For years, detectives have been trying to unravel the mystery of the sudden disappearance of the twin brothers.
Before the couple experienced parenthood, their four-bedroom house seemed unnecessarily opulent.
The boss hit the roof when he saw that we had already spent the entire budget in such a short period of time.
A mouse potato is the computer ____________ of television’s couch potato: someone who tends to spend a great deal of leisure time in front of the computer in much the same way the couch potato does in front of the television.
Mary decided to __________ her Spanish before going to South America.
Umberto Eco was an Italian novelist, cultural critic and philosopher. He is widely known for his 1980 novel The Name of the Rose, a historical mystery combining semiotics in fiction with biblical analysis, medieval studies and literary theory. He later wrote other novels, including Foucault’s Pendulum and The Island of the Day Before. Eco was also a translator: he translated Raymond Queneau’s book Exercices de style into Italian. He was the founder of the Department of Media Studies at the University of the Republic of San Marino. He died at his Milanese home of pancreatic cancer, from which he had been suffering for two years, on the night of February 19, 2016.
To find a good starting point, one must return to the year 1800 during ①which the first modern electric battery was developed. Italian Alessandro Volta found that a combination of silver, copper, and zinc ②were ideal for producing an electrical current. The enhanced design, ③called a Voltaic pile, was made by stacking some discs made from these metals between discs made of cardboard soaked in sea water. There was ④such talk about Volta’s work that he was requested to conduct a demonstration before the Emperor Napoleon himself.
Lasers are possible because of the way light interacts with electrons. Electrons exist at specific energy levels or states characteristic of that particular atom or molecule. The energy levels can be imagined as rings or orbits around a nucleus. Electrons in outer rings are at higher energy levels than those in inner rings. Electrons can be bumped up to higher energy levels by the injection of energy-for example, by a flash of light. When an electron drops from an outer to an inner level, “excess” energy is given off as light. The wavelength or color of the emitted light is precisely related to the amount of energy released. Depending on the particular lasing material being used, specific wavelengths of light are absorbed (to energize or excite the electrons) and specific wavelengths are emitted (when the electrons fall back to their initial level).
Markets in water rights are likely to evolve as a rising population leads to shortages and climate change causes drought and famine. ①But they will be based on regional and ethical trading practices and will differ from the bulk of commodity trade. ②Detractors argue trading water is unethical or even a breach of human rights, but already water rights are bought and sold in arid areas of the globe from Oman to Australia. ③Drinking distilled water can be beneficial, but may not be the best choice for everyone, especially if the minerals are not supplemented by another source. ④“We strongly believe that water is in fact turning into the new gold for this decade and beyond,” said Ziad Abdelnour. “No wonder smart money is aggressively moving in this direction.”
A:I heard that the university cafeteria changed their menu. B:Yeah, I just checked it out. A:And they got a new caterer. B:Yes. Sam’s Catering. A:______________________________________? B:There are more dessert choices. Also, some sandwich choices were removed.
A:Hi there. May I help you? B:Yes, I’m looking for a sweater. A:Well, this one is the latest style from the fall collection. What do you think? B:It’s gorgeous. How much is it? A:Let me check the price for you. It’s $120. B:_________________________________. A:Then how about this sweater? It’s from the last season, but it’s on sale for $50. B:Perfect! Let me try it on.
Beliefs about maintaining ties with those who have died vary from culture to culture. For example, maintaining ties with the deceased is accepted and sustained in the religious rituals of Japan. Yet among the Hopi Indians of Arizona, the deceased are forgotten as quickly as possible and life goes on as usual. (A), the Hopi funeral ritual concludes with a break-off between mortals and spirits. The diversity of grieving is nowhere clearer than in two Muslim societies-one in Egypt, the other in Bali. Among Muslims in Egypt, the bereaved are encouraged to dwell at length on their grief, surrounded by others who relate to similarly tragic accounts and express their sorrow. (B), in Bali, bereaved Muslims are encouraged to laugh and be joyful rather than be sad.
Scientists have long known that higher air temperatures are contributing to the surface melting on Greenland’s ice sheet. But a new study has found another threat that has begun attacking the ice from below: Warm ocean water moving underneath the vast glaciers is causing them to melt even more quickly. The findings were published in the journal Nature Geoscience by researchers who studied one of the many “ice tongues” of the Nioghalvfjerdsfjorden Glacier in northeast Greenland. An ice tongue is a strip of ice that floats on the water without breaking off from the ice on land. The massive one these scientists studied is nearly 50 miles long. The survey revealed an underwater current more than a mile wide where warm water from the Atlantic Ocean is able to flow directly towards the glacier, bringing large amounts of heat into contact with the ice and ___________ the glacier’s melting.
Do people from different cultures view the world differently? A psychologist presented realistic animated scenes of fish and other underwater objects to Japanese and American students and asked them to report what they had seen. Americans and Japanese made about an equal number of references to the focal fish, but the Japanese made more than 60 percent more references to background elements, including the water, rocks, bubbles, and inert plants and animals. In addition, whereas Japanese and American participants made about equal numbers of references to movement involving active animals, the Japanese participants made almost twice as many references to relationships involving inert, background objects. Perhaps most tellingly, the very first sentence from the Japanese participants was likely to be one referring to the environment, whereas the first sentence from Americans was three times as likely to be one referring to the focal fish.
[문장] Thus, blood, and life-giving oxygen, are easier for the heart to circulate to the brain. [지문] People can be exposed to gravitational force, or g-force, in different ways. It can be localized, affecting only a portion of the body, as in getting slapped on the back. It can also be momentary, such as hard forces endured in a car crash. A third type of g-force is sustained, or lasting for at least several seconds. (①) Sustained, body-wide g-forces are the most dangerous to people. (②) The body usually withstands localized or momentary g-force better than sustained g-force, which can be deadly because blood is forced into the legs, depriving the rest of the body of oxygen. (③) Sustained g-force applied while the body is horizontal, or lying down, instead of sitting or standing tends to be more tolerable to people, because blood pools in the back and not the legs. (④) Some people, such as astronauts and fighter jet pilots, undergo special training exercises to increase their bodies’ resistance to g-force.
If someone makes you an offer and you’re legitimately concerned about parts of it, you’re usually better off proposing all your changes at once. Don’t say, “The salary is a bit low. Could you do something about it?” and then, once she’s worked on it, come back with “Thanks. Now here are two other things I’d like...” If you ask for only one thing initially, she may assume that getting it will make you ready to accept the offer (or at least to make a decision). If you keep saying “and one more thing...,” she is unlikely to remain in a generous or understanding mood. Furthermore, if you have more than one request, don’t simply mention all the things you want-A, B, C, and D; also signal the relative importance of each to you. Otherwise, she may pick the two things you value least, because they’re pretty easy to give you, and feel she’s met you halfway.
Today, Lamarck is unfairly remembered in large part for his mistaken explanation of how adaptations evolve. He proposed that by using or not using certain body parts, an organism develops certain characteristics. (A) There is no evidence that this happens. Still, it is important to note that Lamarck proposed that evolution occurs when organisms adapt to their environments. This idea helped set the stage for Darwin. (B) Lamarck thought that these characteristics would be passed on to the offspring. Lamarck called this idea inheritance of acquired characteristics. (C) For example, Lamarck might explain that a kangaroo’s powerful hind legs were the result of ancestors strengthening their legs by jumping and then passing that acquired leg strength on to the offspring. However, an acquired characteristic would have to somehow modify the DNA of specific genes in order to be inherited.