Rhubarb loved everyone and every dog. Whenever someone came to the house, she was always happy. We had an older Samoyed named Willie, and it was important that Rhubarb got along well with him. She wanted to play, but was very respectful of Willie and left him alone when he was tired and needed to rest. Willie was not well and died about a year later, but I believe Rhubarb's interaction helped him keep going for longer than ifhe had been alone. But the interesting thing about Rhubarb was that she never barked. She would sometimes get excited when she saw a mouse and make a little crying sound. One hot night when she was about 4 years old, we went to bed with the windows open and the doors unlocked. At about 3 a.m., I woke up to the sound of Rhubarb barking and growling. I woke Donald and we got out of bed. Rhubarb was coming toward us with her hackles up. We turned on the lights and noticed the door to the kitchen was open. Then we saw the door leading into the house from the garage was also open. We quickly locked all the doors, and we did not get any sleep that night. The next day I called the police to report a break-in. I told them nothing had been taken, but they sent a police officer over to talk with us anyway. While he was here, we found out several local homes had been burglarized over the weekend. Most people had their wallets and purses stolen. My purse was right next to the door, but Rhubarb had scared the robber away before he or she could steal it. When the police officer left, he said we should keep our doors locked and reward Rhubarb with a big steak dinner. Rhubarb lived to be almost 12, but that night was the only time she barked in her entire life. Fortunately, she never saw the need to warn us of any other danger. We loved her like a member of the family and still miss our sweet dog. Why did Rhubarb bark on a hot night? A) She got scared. B) She saw a mouse. C) A thief broke into the house. D) The doors were unlocked.
C
(Question)
When NASA astronaut Scott Kelly completes his yearlong mission on the International Space Station next year, he'll come back just a little bit younger than his twin, Mark, than he was before. This is because time travels more slowly in space, a phenomenon first described by Albert Einstein's 1915 theory of general relativity. This December, universities and academies around the world are celebrating the 100th anniversary of the theory's publication. Even 60 years after his death, Einstein is still the most important scientist of the modern era. Looking back as far as 2,400 years ago, only Newton, Galileo and Aristotle were his equals. Born in the era of horse-drawn carriages, his ideas started a technological revolution that brought about more change in one century than in the 2,000 years before. In 1905, Einstein published four important scientific papers. These completely changed people's ideas about space, time, light and matter. In one of these papers Einstein. introduced his theory of special relativity. Two groundbreaking parts of the theory were about the relationship between mass and energy and the speed of light. Einstein was able to show that mass and energy were connected through the formula E=MC2. The theory also says that no object can travel faster than the speed of light. About 10 years later came his theory of general relativity, the theory that modern physics is really based on. In Einstein's mathematics, space has three dimensions, and the fourth dimension is time. Space and time are part of one continuum, called space-time. The presence of mass changes space-time, which explains where gravity comes from. Computers, satellites, telecommunication, lasers, television and nuclear power, many of the biggest developments in the modern world, can be linked to Einstein's work. "We are a different people than we were a century ago," said astrophysicist Michael Shara of the American Museum of Natural. History, "completely different, because of Einstein." However, there's more to him beyond the image... By using Michael Shara's words, the author intends to _ . A) give high praise to Einstein's important publications B) stress the great contribution that Einstein made to the modern world C) suggest that more research needs to be done into Einstein and his work D) say that there was more to Einstein than just being a science genius
(Answer)
B
Don't you find that it is getting increasingly darker every day when you wake up for school ? As winter comes ,days become shorter while the nights become longer ,In the past people slept more in winter ,but in modern times we just use more electric light instead of sunlight to continue our normal routines . But scientific research is finding that manhandling of electric light is making us sick . Electric light is fooling the body's biological clock into releasing awaking hormones ( )at the wrong times ,scientists say .This might be leading to seasonal fatigue and depression . Much more than mental health is at stake ,Recent scientific studies have found that women who work at night ,have higher chances of getting breast-cancer . "Electric lights are wonderful ,but as with a lot of other things ,we really mess ,things up "said David Avery ,a psychiatrist ." Our ancestors evolved in a very regular light -dark cycle ,and our bodies just work better that way ." Researchers have known for a long time that all living things have a biological clock that is linked to light ,Being of the natural day-night cycle can cause fatigue ,mood change and depression ,This is known as seasonal affective disorder ,or SAD. Scientists disagree on the cause of SAD ,Some say it is caused by winter's late sunrises , others blame the early sunsets . However ,they all agree the perfect solution to SAD is to give up artificial light ,It will quickly bring someone into a cycle of long ,restful nights and easy awakenings at dawn . But realistically most people need to use electric light in their everyday life . Ironically the next best solution is to use more bright lights to reset the body's biological clock . By getting bright light first thing in the morning it simulates an earlier dawn and shifts the body clock forward ,according to Alfred Lewy ,a psychiatrist at Oregon Health & Science University . A 2005 study done by the American Psychiatric Association showed that daily exposure to bright light was about as effective as... It can be inferred from the text that _ A) women are more likely to suffer SAD than men B) SAD is a reaction to the lack of sunlight in winter C) scientists are still unclear about the cause of SAD D) all living things have a biological clock related to electric light
C