Read the article and select the best answer. Article: Two space walkers fixed a camera on the outside of the international space station on Monday and threw overboard a data - collecting device , sending it rolling off into space like a football. The new camera will help space station astronauts add new pieces onto the orbiting station. Mr Arthur and his Russian crewmate left the or biting station unmanned during the 5 - hour spacewalk. Normally, one crew member stayed aboard while two others worked outside. But the space station crew has been reduced to two since the space shuttle prefix = st1 /Columbiadisaster in 2003, and it has been left empty nine times during spacewalks since then. The device thrown overboard was once used to collect data on electrical activity around the space station. It was designed to work for only a few months and was no longer needed. Engineers were afraid pieces might break off and damage the space station, so they decided to cut it loose. The device, which weighs about 60 pounds and has solar panels that extend about 2 feet, is expected to burn up in the atmosphere in about three months. Happily, the space walking pair helped each other into their spacesuits without the help of a third crew member. The space walk was put off by an hour because of trouble with the US airlock , which did not depressurize completely at first. But the pair quickly made up for the lost time as they worked outside. It was the first time in two years that space walkers exited through the USairlock. Question: Why did the spacewalkers leave the orbiting station unmanned? Options: A: They were busy fixing a camera. B: They had to throw a data - collecting device. C: They had to stay aboard. D: The space station crew has been reduced to two due to an accident.
D

(Question)
Read the article and select the best answer. Article: Deception is something that people do all the time ,and it plays an important role in military strategy. Now some researchers are trying to figure out how to get robots to do it, by looking at the behavior of squirrels and birds. At Georgia Tech, a team led by Ronald Arkin , a professor at the School of interactive Computing, studied the literature on squirrels hiding their acorns .Squirrels will hide their food m a certain place, but when they see other squirrels trying to steal from them, they attempt to fool the thieves by running to a fake location. Ronald Arkin and his Ph. D. student Jaeeun Shim used that as a model for robot behavior. They programmed the robot into tricking a "predator " machine by doing what ei squirrel does: showing the enemy a false location for an important resource. The team also looked at how other animals in this case,a species of bird called Arabian babbler~ drive off predators. A babbler will make an alarm call when they see a predator and other babblers will join the bird and make more calls. They then surround the predator, all the while flapping wings and making noises. The babblers don't ever actually fight the animal they want to drive off; they just make enough noises and flaps around enough so that it seems that attacking a babbler isn't worth it They found that the deception works when the group reaches a certain size--essentially, when enough birds arrive to convince the enemy that it's best to back off . Davis modeled that behavior in software using a military scene and found that it worked even if the group didn't have the firepower to confront the enemy directly. The military is interested in this because a robot that can fool an opponent is a valuable tool. It could lead an enemy down a fake trail or make itself look more dangerous than it actually is. Question: Which of the following is NOT the way Arabian babblers drive off predators? Options: A: One bird makes an alarm call and other birds will join it B: They fight the enemy bravely face to face. C: They make noises and flaps around the predator. D: They force the predator aware that it isn't worthwhile to attack.
(Answer)
B

Ques: Read the article and select the best answer. Article: The Wonder of Argentina Iguazu Falls Missing the sun? Well, down in Argentina, its summertime and beautiful destinations like Iguazu Falls are waiting to be discovered. Lots to do and see, this is one place everyone needs to visit at least once in their lifetime. Located in the northern province of Misiones, Argentina on the Iguazu River (iguazu being the Guarani word for "great water"), Iguazu Falls is known as one of the world's largest and most attractive waterfalls. Upon former US First Lady Eleanor Roosevelt's visit to the Falls, she said, "Poor Niagara!" The Falls divide the river in half, making the upper and lower Iguazu. The largest of the 275 falls that swallow the river is "Devil's Throat", and with a height of an astonishing 80 meters, it's a fairly impressive sight to view! The Park In order to see the Falls in all its glory, you'll need to visit the Park, which was created in 1934 to preserve the biological diversity of the subtropical rainforest and the breathtaking scenery surrounding the Falls. It was declared a Natural Heritage in 1984 and covers an area of approximately 660 square meters. Approximately 400 species of birds, 2000 species of plants and a world of insects call the Park their home. You'll especially love the butterflies that constantly surround and play with you! The Devil's Throat The "Garganta del Diablo" (means Devil's Throat) is the reason for this trip! Once in the Park, you can enjoy walking along the scenic 1100-meter-long path that starts from Garganta station and takes you to the viewing balcony , where you'll be able to get an overall view of one of the most beautiful sights you'll ever see! However, be prepared to be wet through by the powerful spray coming off the Falls. Don't Miss Take a boat ride that place you right under the falls----but be prepared to get totally _ !---- and walk along more stunning paths; enjoy a photo safari through the forest, or view the Falls at night under the light of the full moon! Question: According to the passage, you can do all the following things in the Park Except _ . Options: A: meeting a lot of birds, plants and insects B: getting a full view of Devil's Throat on the viewing balcony C: walking right under the falls D: viewing the Falls during the nighttime
Ans: C

Question: Read the article and select the best answer. Article: Learners of English, especially self-taught learners may have trouble in understanding speeches by native speakers. The following ways might help improve their listening ability. First of all, do things step by step. It is not good to listen to something beyond your level. Better choose a suitable course and start with the first book. Go on to the second book only after you are sure you understand the first one. Secondly, stick to one course of study. Don't change books often. Never let your attention be attracted by another course just because it seems to be more "fashionable". Thirdly, listen to the English news program over the radio from time to time. Better go through the news stories in the Chinese-language newspaper first. That will make it easy for you to understand the English news on the radio. Fourthly, if you have time, listen to some interesting stories in "Special English from the V.O.A. or other listening materials of the same level as that of your textbook". Question: The author advised that once you have taken up a course, you _ . Options: A: should stick to it B: should begin with the last book C: should take up other courses if they are more fashionable D: shouldn't do anything else
Answer:
A