*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: In modern society, people can hardly do without mobile phone or computer. The youth of today are even more looking forward to Apple Corp's products. The iPad is an Apple tablet computer. The device sits somewhere between a laptop and a smart phone, according to Apple's chief executive, Steven P. Jobs, and does certain things better than both of them, like surfing the Web, reading e-books and playing videos. The iPad went on sale on April 3, 2010, and Apple said it had shipped 500,000 units in the first week. The handheld device puts Apple on a direct collision course with the Kindle from Amazon, which Mr. Jobs ever considered as pioneering the category. It is common knowledge that media companies hope the iPad will finally lead to available ways for them to charge for news, books and other materials. The half-inch thick, 1.5-pound device features a 9.7-inch multi-touch screen and is powered by a customized Apple microchip, which is called A4. It has been designed with an exposed screen and without a camera or separate keyboard. The iPad has the same operating system as the iPhone and also has access to its 140,000 applications. The price of the device starts at $499 for the most basic model, with a Wi-Fi wireless connection. More expensive models with more memory and with 3G wireless access will cost $629 to $829, depending on storage size. Because Apple is attempting to popularize a new kind of computing device, acceptance among consumers is expected to be slower than with previous Apple devices. Critics assume that some buyers are waiting for future versions of the iPad to appear, perhaps with a camera or USB ports . On its first day on sale, iPad users downloaded more than one million applications from the company's AppStore and more than 250,000 electronic books from its iBookstore. A new wave of apps is expected in response to the iPad. For an application developer, having an application accepted for a highly desired Apple product means reaching a passionate group of consumers. The potential... Question: It is implied in the passage that _ . Options: A: people may download any application from the App Store B: the Apple company will make more profit from the iPad C: people would prefer to buy an iPad rather than an iPhone D: owning an Apple product means that you will be respected
**Answer**
B

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: Using tablet computers like Apple's iPad and Samsung's Galaxy Note just before bed can lead to a poor night's sleep, according to research. More and more people are taking their tablets to bed with them to surf the web, check Facebook or email before switching off the light. But researchers are warning that the blueish light their screens emit can stop users getting a good night's sleep. That is because this type of light mimics daylight, convincing the brain that it is still daytime. Blue light suppresses production of a brain chemical called melatonin, which helps us fall sleep. This is because our brains have evolved to be wakeful during daylight hours. By contrast, light which is more orange or red in tone does not reduce melatonin production, perhaps because our brains recognize it as a cue that the day is ending. Neurologists have known for years that staring at screens late in the evening can disrupt sleep. Researchers at the Lighting Research Centre, at the Rensselaer Polytechnic Institute in New York, are warning that looking at tablet displays for more than two hours "leads to a suppression of our natural melatonin levels as the devices emit optical radiation at short wavelengths" - in other words, they emit bluer light. They say: "Although turning off devices at night is the ultimate solution, it is recommended that if these devices are used at night displays are dimmed as much as possible and that the time spent on them before bed should be limited." They drew their conclusions after measuring melatonin levels in 13 volunteers, after they had spent time viewing iPads at full brightness at a distance of 10 inches, for two hours. Melatonin levels were significantly lower after they had done this, than they were after the volunteers had viewed their iPads for the same time, but while wearing orange glass goggles, which cut out the blue light. They wrote in the journal Applied Ergonomics that tablet makers could "tune the spectral power distribution of self-luminous devices " so that they... Question: The writer's purpose for writing this article is to _ . Options: A: inform readers of a recent research. B: complain about problems caused by using iPads before bed. C: offer some suggestions on late night screen viewing. D: advocate late night screen viewing.
**Answer**
A

*Question*
I'm taking a test and have to guess the right answer to the question after the article. Article: Ever get that feeling you're being watched? Well, if you're a dog-owner, you may have a point. Dogs are able to watch people's interactions with one another to determine who holds yummier treats, according to a new study. This study joins others that show dogs are good observers of human behaviors and feelings. It offers evidence that dogs use information not only from people's direct interactions with them, but also their interactions with one another. In the study, dogs watched a man ask two women for some of their corns. Both women gave the man corns when he asked, but in response to one woman, the man showed his enthusiasm and said the corns were so delicious. In response to the other woman, he gave the corns back and called them _ (in Spanish;the study was conducted in Argentina). After these interactions, the man left and an assistant holding the dog let the dog go. While many dogs didn't approach either woman, the dogs that did have a preference tended to prefer the woman with the yummier food. Other studies of dogs' people-watching ability have found dogs are able to tell the difference between happy and sad faces in their owners. They prefer people who give others food when asked over people who don't give others food. And in one study, dogs turned toward crying people more often than toward talking people. So how much do dogs really understand about the humans around them? That's not totally settled yet. In a strange twist to the Argentine study above, when the researchers tried an experiment in which they put two plates of corns on a table and had a man react to each plate, dogs didn't preferentially approach the tastier plate afterward. You could say dogs watch for the interaction between two persons, not just how a person reacts. Yet a previous study found dogs will choose boxes that people reacted to happily, but not boxes people reacted to with a disgusted face. Well, either way, you can be sure Fluffs is keeping an eye on you, to the best of her ability. The study was published in the journal... Question: What does the study mentioned in this passage show? Options: A: Dogs prefer yummier foods. B: Dogs can read human actions and feelings. C: Dogs can interact with humans easily. D: Dogs like to copy human's behavior.
**Answer**
B