Article: An electric signal can trick a monkey's brain into believing the animal's finger has been touched. Touch something, and your brain knows. The hand sends signals to the brain to announce contact was made. But that feeling of touch may not require making actual contact, tests on monkeys now show. Zapping brain cells can fool the animal into thinking its finger has touched something. A person who has lost a limb or become paralyzed may need an artificial limb to complete everyday tasks. But such patients may not truly feel any objects they hold. The new findings point toward one day creating a sense of touch in those who use such artificial limbs. Psychologist Sliman Bensmaia of University of Chicago worked on the new tests. His team's findings appeared on October 14 in the Proceedings of the National Academy of Sciences of the United States of America. The sense of touch is crucial to everyday tasks: People without _ may have difficulty cracking an egg, lifting a cup or even turning a doorknob. That's why restoring it is a major goal for designers of artificial limbs. In their new study, Bensmaia and his co-workers worked with rhesus monkeys . The scientists implanted electrodes --- small devices that can detect and relay an electrical signal--into the animals' brains. The scientists used the electrode data to identify which neurons had become active. Then the scientists used the implanted electrodes to zap those same neurons. And the monkeys reacted as though their fingers had been touched. In fact, they hadn't. The monkeys couldn't use words to tell the scientists what they had felt. Instead, they communicated by looking in a particular direction--just as when they had really been touched. The new findings show how touch-sensitive devices could be built. The new study also offers " a nice clear pathway" for figuring out how to restore a sense of touch to an amputee or someone with a injury of spinal cord. The study shows how artificial limbs might be connected to the brain so that a person can "feel" with... Question: The passage is mainly about _ . Yes or no, is the answer "restoring a sense of touch"?
Yes

Article: Many people believe the glare from snow causes snowblindness. Yet, with dark glasses or not, they find themselves suffering from headaches and watering eyes, and even snowblindness ,when exposed to several hours of" snow light". The United States army has now determined that glare from snow does not cause snowblindness in troops in a snow -covered country. Rather ,a man's eyes frequently find nothing to focus on in a broad space of snow- covered without- grass land. So his gaze continually moves and jumps back and forth over the entire landscape in search of something to look at. Finding something, hour after hour, the eyes never stop searching and the eyeballs become tired and the eye muscles ache. Nature makes up for this discomfort by producing more and more fluid which covers the eyeball. The fluid covers the eyeball in increasing quantity until it makes eyes difficult to see dearly, and the result is total, even though for a short time, snowblindness. Experiments led the Army to a simple method of overcoming this problem. Scouts ahead of the troops are trained to shake snow from evergreen bushes, creating a dotted line as they cross completely snow - covered landscape. Even the scouts themselves throw lightweight, dark - colored objects ahead on which they can focus too. The men following can then see something. Their gaze is arrested. Their eyes focus on a bush and having found something to see, stop searching the snow -blanketed landscape. By focusing their attention on one object at a time. the men can cross the snow without becoming hopelessly snowblind or lost. In this way the problem of crossing a continuous white land is overcome. Question: Snowblindness can be avoided _ . Yes or no, is the answer "by providing the eyes with something to focus on"?
No

(Question)
Article: Colleges may try to do a lot to prepare students for study abroad - telling about culture shock, warning about homesickness, recommending books about the country. But when it comes to adjusting to campus life when they return, schools haven't done as much, even though the transition is sometimes almost as difficult. "They can feel disoriented and depressed. They find things are not exactly the way they were when they left," said Antonio Jimenez, director of the Center for International Affairs at California State University Channel Islands in Camarillo, California, US. "They find that people don't care much about their experiences." Some colleges are now rethinking their approach to study abroad, recognizing that students might need almost as much help adjusting to life back home as they did getting ready to leave: students experience a sort of reverse culture shock when they return to the US. They might be troubled by the wealth and waste they see back home or they might feel homesick for their new country and its customs. And when they try to talk about their experiences, people quickly lose interest, especially if they haven't lived abroad themselves. Down the road, they also might find it difficult to translate their time abroad into experience that an employer finds attractive. Some California universities have organized conferences to help students make the most of their time abroad. During a one-day event, students learn how to adjust after living abroad, talk about their experiences and incorporate them into their lives and future careers. Blythe Cherney, 22, a senior who has studied in Thailand and Britain, found the _ helpful. "Any experience abroad does have an effect on you," Cherney said. "When you come back, it's important to talk about it, especially with people who know what you've been through." Yet most universities focus more on preparation than reorientation. When students return, they might have a welcome home reception. But for the most part, universities figure students can fend for themselves. Question: Which of the following is NOT the trouble that students face when they return from studying overseas? Yes or no, is the answer "Losing interest in their homeland"?
(Answer)
No