Article: Space is where our future is -- trips to the Moon, Mars and beyond. Most people would think that aside from comets and stars, there is little else out there. But, since our space journey started we have left so much trash there that scientists are now concerned that if we don't clean it up, we may all be in mortal danger. The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning things that no longer served any useful purpose in space. It is estimated that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk. The major problem with the space trash is that it may hit working satellites and damage traveling spacecraft . Moreover, pieces of junk may collide with each other and break into pieces which fall back to the Earth. To avoid this, scientists have invented several ways for clearing the sky. Ground stations have been built to monitor larger pieces of space trash to prevent them from crashing into working satellites or space shuttles. Future plans include a cooperative effort among many nations to stop littering in space and to clean up the trash already there. Question: Which of the following statements is true about space junk? Yes or no, is the answer "It may cause problems for space shuttles."?
No

Article: A report on a new software that enables eyes to do the typing appears in Wednesday's edition of the journal Nature. Replacing a keyboard or mouse, eye-scanning-cameras mounted on computers have become necessary tools for people without limbs or those affected with paralysis. The camera tracks the movement of the eye, allowing users to "type" on a virtual keyboard as they look at the screen. And now, researchers from the Cavendish Laboratory at prefix = st1 /CambridgeUniversitysay they have developed software that replaces the standard QWERTY keyboard layout with one that is nearly twice as efficient, more accurate and easier on the eyes. Called Dasher, the prototype program looks into the natural gaze of the eye and makes predictable words and phrases simpler to write. Any off-the-shelf camera capable of scanning eye movement can be used with Dasher, though the person must sit fairly still during the interaction. The letters of the alphabet appear in a single column on the right of the screen, with an underline symbol to represent a space. Each letter is framed by a color1ed box. As the user looks at a particular letter on the right side of the screen and drags it to the left with their eye, another sub-alphabet column begins to emerge inside the box on the right-hand side, along with more letters framed in color1ed boxes. Dasher is designed to anticipate which letter will be needed, so although the successive sub-alphabet columns are initially very small, the letters or combination of letters that appear are most likely to be used next in that sequence. For example, if a person starts with the letter "h", the language models in Dasher will bring up "a" "e" "i" "o" and "u" in the sub-alphabet box, along with a few other possible combinations like "ello" to form the word "hello". Each box has a complete alphabet within it, though the first letters to appear have the highest probability of usage. The letters are then placed together to form a sentence on the left side of the screen. Researchers say people... Question: With the new software Dasher, people can type with their eyes through _ . Yes or no, is the answer "an eye-scanning camera on computer"?
No

Q: Article: As I stood in a stall of Beijing's Silk Market, waiting to exchange a silk garment, I watched in amazement as the young vendor pulled out silk nightgown after nightgown for a foreigner, who sounded like an American, but frankly could have been from any English-speaking Western country. The man appeared satisfied when she pulled out a bright, purple nightgown and said, "This one, very good." and probably asked how much it cost, for the owner pulled out her calculator showing 800. My heart was pounding heavily. After all, I was holding a similar gown in my hand for which I had paid all of 60 yuan ($9.39) just the previous day. I wanted to scream and say, "Wait, you are _ ". But I just kept silent. As I moved away from the stall a thousand thoughts flashed in my mind. Should I have just stepped in and stopped it? I may have saved the man but could have brought danger to myself. Maybe I could have pretended to seek help with some English from that man and warned him not to be cheated? When I told the incident to some of my friends, most seemed to think it was unfortunate but one couldn't fault the vendor. Everyone visiting China knows, or ought to know, that bargaining is a way of life here, they said. Although I do agree that the man should have been better informed, it just doesn't seem right that the place, to which tourists from all over the world are brought and made to believe is a Mecca for shopping in Beijing, should be allowed to get away with such daylight robbery. I still think I should have done something about what I witnessed. Question: What can be safely concluded from the passage? Yes or no, is the answer "The writer regretted not having warned the man of danger."?
A: No

Article: The Bedouin people think most highly of people who show loyalty. To them loyalty does not mean that one is devoted to a country, a place, or a leader. Loyalty means being faithful to one's family and tribe . The Bedouin people take pride in their ancestors . They do not admire a hero from an ordinary or poor family as much as one who comes from an honored family. They particularly respect those who have received a good name from their ancestors and then have passed it on to their children. A man's position among the black-tent people depends upon his ancestors, relatives, and fellow tribesmen. If they are honored, he is also honored. If they are disgraced, he too is disgraced. Therefore one carefully guards the honor of his family, his lineage ,and his tribe. A man can protect his family's honor by being brave and generous and by giving protection to those who ask for it. He also guards it by carefully watching the women of his family. A Bedouin woman cannot bring honor to her family, but she can bring disgrace. Even if a woman only looks as if she has done wrong, she may be killed. The honor of her family depends upon her virtue . Question: It can be inferred from the passage that a Bedouin man will feel disgraced if he _ . Yes or no, is the answer "does nothing when a member of his family is badly treated"?
No