Since American students have been introduced into the era of the Massive Open Online Course, the opportunity for cheating appears greater than ever. The all-knowing Google search engine is within easy reach. So how can a teacher handle such a large number of examinees so far away, let alone searching out cheaters taking tests across the Internet? Using technology, of course. While special services via webcam and cheating detecting software have been developed now, Mettl, an online company, has developed advanced techniques for netting cheaters, which the company claims are even more reliable and easier to use. Whatever small attempt to cheat, he or she will be found out. Mettl has adopted a mass of technologies on its test-taking platform, creating a mini monitoring state in an exam. Here's how it works: A test-taker signs on to Mettl and selects his/her exam from the site's library of pre-loaded tests. Facial and keystroke recognition technology confirm the person that has signed in is the very person, and the system records both the test-taker (through the webcam) and the test-taker's screen throughout the test. Mettl's technology uses the test-taker's webcam to detect how many people are using the computer. Soon, it will track eye movement well enough to sense whether the test-taker is looking away from the screen, perhaps to consult a smart phone or a friend in secret. Mettl also monitors the test-taker's screen and can detect when the test-taker has changed a computer or moved from the test. The system will soon be able to record sound, detecting whether the test-taker is talking or being talked to. If any wrongdoings are detected, the system flags the incident and reports it back to the test's administrator. This can bring any number of things, depending on the test-giver's wishes: a complete shutdown of the exam, a warning message that appears on the test-taker's screen, even human instructions from the control center. Mettl is hoping its technology will help it break into the country's big MOOC markets. We can conclude from the passage that the technology of Mettl is _ in the MOOC era. A) unreliable B) promising C) wasteful D) instructive
B
(Question)
Linda was kind of late. Linda, 25, had a lot to do at work, plus visitors on the way: her parents were coming in for Thanksgiving from her hometown. But as she hurried down the subway stairs, she started to feel uncomfortably warm. By the time she got to the platform, Linda felt weak and tired -- maybe it hadn't been a good idea to give blood the night before, she thought. She rested herself against a post close to the tracks. Several yards away, Frank, 43, and his girlfriend, Jennifer, found a spot close to where the front of the train would stop. They were deep in discussion about a house they were thinking of buying. But when he heard the scream, followed by someone yelling, "Oh, my God, she fell in!"Frank didn't hesitate. He jumped down to the tracks and ran some 40 feet toward the body lying on the rails. "No ! Not you ! "his girlfriend screamed after him. She was right to be alarmed. By the time Frank reached Linda, he could feel the tracks shaking and see the light coming. The train was about 20 seconds from the station. It was hard to lift her. She was just out. But he managed to raise her the four feet to the platform so that bystanders could hold her by the arms and drag her away from the edge. That was where Linda briefly regained consciousness, felt herself being pulled along the ground, and saw someone else holding her purse. Linda thought she'd been robbed. A woman held her hand and a man gave his shirt to help stop the blood pouring from her head. And she tried to talk but she couldn't, and that was when she realized how much pain she was in. Police and fire officials soon arrived, and Frank told the story to an officer. Jennifer said her boyfriend was calm on their 40minute train ride downtown--just as he had been seconds after the rescue, which made her think about her reaction at the time. "I saw the train coming and I was thinking he was going to die, " she explained. When did Linda become conscious again? A) When the train was leaving. B) After the police and fire officials came. C) After she was back on the platform. D) When a man was cleaning the blood from her head.
(Answer)
C
Question: Every artist knows in his heart that he is saying something to the public. Not only does he want to say it well, but he wants it to be something that has not been said before. He hopes that the public will listen and understand ----he wants to teach them, and he wants them to learn from him. What visional artists like painters want to teach is easy to make out but difficult to explain, because painters translate their experience into shapes and colors, not words. They seem to feel that a certain choice of shapes and colors, out of the countless billions possible, is very interesting for them and worth showing to us. Without their work we should never have noticed these particular shapes and colors, or have felt the delight which they brought to the artists. Most artists take their shapes and colors from the world of nature and from human bodies in movement and at rest; their choices show that these aspects of the world are worth looking at, that they contain beautiful sights. Modern artists might say that they only choose subjects that provide an interesting pattern, that there is nothing more in it. Yet even they do not choose totally without thinking about the character of their subjects. If one painter chooses to paint a decaying leg and another a lake in moonlight, each of them is directing our attention to a certain aspect of the world . Each painter is telling us something, showing us something, emphasizing something - all of which means that, consciously or unconsciously, he is trying to teach us. Which of the following is implied but NOT directly stated in the passage? A) A painting is more easily understood than a song B) Art is only the arranging of shapes and colors C) Every artist tries to say something to the public D) One must look beyond shapes and colors to find out what an artist is saying
Answer:
D