Article: The universe looks like a pretty quiet place to live. But the universe is filled with dangerous things, all struggling to be the one to wipe us off the planet. Happily for us, they're all pretty unlikely, but if you wait long enough, one of them is certain to get us. But which one? 1. Death by Asteroid Of all the ways we might meet our untimely death, getting wiped out by an asteroid is the most likely. Why? Because we sit in a universal shooting gallery, with 100 tons of material hitting us every day. The problem, though, occurs every few centuries when something big this way comes. If you could ask a dinosaur, I'd imagine they would tell you to take _ seriously. 2. Death by Exploding Star When a huge star ends its life, it does so with a bang, which sends death spreading across space in the form of high-energy radiation. Many studies show that the bang would have to be closer than about 75 light years to do us any harm. The good news: no stars so close are able to do the deed. 3. Death by Dying Sun The sun is important to us; without it, we'd freeze. But the sun is also middle-aged, already halfway to running out of fuel, expanding into a red giant, and cooking us to a fine crisp. Even long before then, it'll warm up enough to raise our average temperature and cause a runaway greenhouse effect, boiling our oceans. Happily, that's a long time from now. 4. Death by Black Hole Black holes are misunderstood. They don't wander the galaxy looking for tasty snacks in the form of planets and stars; they turn around the Milky Way just like the hundreds of billions of other stars do. But it's possible that one could wander too close to us. If it did, planetary paths would be disturbed, causing the Earth to drop into the sun or be thrown out into deep space. Given that it could be trillions of years or more before even that happens, we don't have to worry too much about black holes. My advice? Go outside, look up, enjoy the sun, the moon, and the stars. They may be there forever as far as any one of us is... Question: Which of the following will cause the earth's average temperature to go up dramatically? Yes or no, is the answer "The dying sun."?
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Article: What are American high schools like? Well, I'm happy to tell you what I know. When I started school here, it had already been a week since the school opened. At this school, freshmen usually go on a trip for about three days at the beginning of school. Unfortunately I missed that wonderful trip, which would have been the best time to get to know my classmates. I was really sad. I wished I'd known about it earlier. Despite the disappointment, however, I gradually adapted to my new life and school. There is a space in the basement of the teaching building where students chat and meet each other. As we do not always have the same classrooms and classmates, the school wants us to get to know each other there. Students usually come to school early, sit in that space and have fun. Around the space, there are many lockers for students to leave their books in, so that students do not have to carry a heavy schoolbag everywhere. It really surprises me that we have almost no textbooks. We only have textbooks for World History and Algebra 2 and they are big and heavy, like bricks. For other classes, we only need binders with paper in them. Without textbooks, students learn things freely and actively. For example, my humanities teacher just teaches us what is in her mind at the time. We never know what we will learn. Another difference between American schools and Chinese schools is that American schools care about students' morality more than their academic studies. For example, if you do not finish your homework, you will just be asked to do it later, but if you cheat or lie, you will get a warning or even be kicked out. I think that most students here are good at schoolwork as well, but compared to Chinese students, they can make learning a more joyful experience. I think we should take the good points from our two different kinds of education to perfect our approach to studying. Question: What was the writer sad for? Yes or no, is the answer "He missed the trip at the beginning of school."?
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Article: As the semester ended, students had a chance to _ . They got to grade me anonymously , assessing the ability of my thinking, my organizational skills and the depth of my knowledge. Such evaluations keep me alert to what works and what doesn't. Students reflect my performance back to me, and I'm glad to learn what they think of my teaching so that I might try to improve. This system reflects many aspects of my work. There is, of course, nothing wrong with it. But this system assumes that what students need is the same as what they want. Reading my evaluations every semester has taught me otherwise. Actually many students' expectations for their courses have already changed, reflecting, in part, the business model many universities are following: classes are considered services, and parents are eager to get their money's worth from their children's education. Students feel pressure from their parents to get practical use from their courses. This could make sense for an engineering course, but in my field, creative writing, which rarely trains up excellent 21-year-old writers, it is more difficult to provide the results that the career-minded students desire. Then I tried some teaching techniques to change the criticism of those unhappy students to the opposite and improve my student evaluations. My record would accurately reflect a smart, attentive, encouraging teacher. However, I would admit that they loved me simply because I agreed writing should be easy. I know other teachers have done the same thing: teach your heart out to the teachable but be sure to please the unteachable; keep your ratings high, like a politician trying to improve his poll results. I believe in the struggle. But I still can't help wincing when I read, "The instructor is mean." "Marcus is not committed to my work." "This class sucks." The business model has taught me that customers are always right. And maybe a few more dissatisfied customers would mean a better learning experience. Question: What is the author's attitude towards being graded by his students? Yes or no, is the answer "Positive."?
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