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In this task, you're given an article and an answer. Your task is to generate the question for the answer based on the given article.
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Article: My friend Fowkes, tells a story of a class he took in 1930s, when books were short and expensive. On the first day the professor marched up to the blackboard, looked through his notes, cleared his throat, and began. Fowkes was the only student in the course. Once Fowkes fell ill and missed a class. When he returned, to Fowkes' s astonishment, the professor began to deliver not the next lecture in the sequence but the one after. Had he lectured to an empty hall in the absence of his only student? It was perfectly possible. Today, professors continue to lecture and students to listen much as they did. It' s time for us to abandon the lecture system and turn to methods that really work. Attending lectures is passive learning ,at least for inexperienced listeners. Active learning, in which students write essays or perform experiments and then have their work evaluated by an instructor, is far more beneficial for those who have not yet fully learned how to learn. Most students learn best by engaging in debate. They need small discussion classes that demand a joint effort of teacher and students rather than classes in which one person, however learned, expresses his or her own ideas. The lecture system harms professors as well. It reduces feedback to a minimum, so that the lecturer can neither judge how well students understand the material nor benefit from their questions or comments. Questions that require the speaker to clarify unclear points and comments that challenge inadequately constructed arguments are indispensable to scholarship. Without them, the liveliest mind becomes dull. If lectures make so little sense, why have they been allowed to continue? The truth is that lectures are easier on everyone than debates. Lectures give some students an opportunity to sit back and let the professor run the show. In a classroom where everyone contributes, students are less able to hide and professors have less room to show off how smart they are. Worse still, the lectures too frequently come at the wrong end of the students' educational careers -- during the first two years, when they most need close, even individual, instruction. If lecture classes were restricted to junior and senior undergraduates and to graduate students, who are more academically independent and more capable of working on their own, they would be far less destructive of students' interests and enthusiasms. After all ,students must learn to listen before they can listen to learn.
Answer: It is far from beneficial for those academically inexperienced students.
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What can we learn about the current lecture system?

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Article: The English language is the result of the invasion of the island of Britain over many hundreds of years.The first invasions were by a people called Angles about 1, 500 years ago. The Angles were a German tribe who crossed the English Channel . Later two more groups crossed to Britain. They were the Saxons and the Jutes. Through many years, the Saxons, Angles and the Jutes mixed their different languages. The result is what is called Anglo-Saxon or old English. The next great invasion of Britain was done by Vikings about 1, 100 years ago. Many English words used today come from these ancient Vikings. The next invasion of Britain took place more than 900 years ago, in 1066. History experts call this invasion the Norman Conquest. The Normans were a French-speaking people from Normandy in the north of France. These new rulers spoke only French for several hundred years. It was the most important language in the world at that time. It was the language of educated people. But the common people of Britain still spoke old English. Old English took many words from the Norman French. Some of these include "damage", "prison", and "marriage". The French language used by the Norman rulers greatly changed the way English was spoken 800 years ago. English became what language experts call Middle English. Middle English sounds like Modern English. But it is difficult to understand now. The history of the English language continues as Middle English becomes Modern English, which is spoken today.
Answer: The Angles.
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Who was the first invaders of Britain?

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Article: Scientists have long puzzled over how iguanas, a group of lizards mostly found in the Americas, came to live in the isolated Pacific islands of Fiji and Tonga. Some scientists used to suppose that they must have traveled there on a raft, a journey of around 5,000 miles from South America to the islands. There are documented cases of iguanas reaching remote Caribbean islands and the Galapagos Islands on floating logs. But new research in January by Brice Noonan and Jack Sites suggested that iguanas may have simply walked to Fiji and Tonga when the islands were still a part of an ancient southern supercontinent. The ancient supercontinent was made up of present-day Africa, Australia, Antarctica and parts of Asia. If that's the case, the island species would need to be very old. Using "molecular clock" analysis of living iguanas' DNA, Noonan and Sites found that, sure enough, _ has been around for more than 60 million years--easily old enough to have been in the area when the islands were still connected by land bridges to Asia or Australia. Fossils uncovered in Mongolia suggest that iguanid ancestors did once live in Asia. Though there's currently no fossil evidence of iguanas in Australia, that doesn't necessarily mean they were never there. "The fossil record of this continent is surprisingly poor and cannot be taken as evidence of true absence," the authors write. So if the iguanas simply walked to Fiji and Tonga from Asia or possibly Australia, why are they not also found on the rest of the Pacific islands? Noonan and Sites say fossil evidence suggests that iguana species did once inhabit other islands, but went extinct right around the time when humans settled in those islands. But Fiji and Tonga have a much shorter history of human presence, which may have helped the iguanas living there to escape extinction. The researchers say that their study can't completely rule out the rafting theory, but it does make the land bridge theory "far more reasonable than previously thought."
Answer: They traveled by raft to Fiji and Tonga.
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What did some scientists previously believe about the iguanas?