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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: As is known, it is a respectful job to be a teacher serving students heart and soul. And most people also compare a teacher to a gardener who takes great care of various plants. Ever since my high school days, my heart has been set on becoming a teacher. I am now studying at a teacher's college, and I am making great efforts to study, because there are so many things to learn about education. But I thoroughly enjoy my studies, and every day I am amazed at the great influence education has on the human soul. I think it is only natural that I have always _ to become a teacher because my father and his father were also teachers. My father is now retired, following a brilliant career, and it has always been his dream to have me, his only son, follow in his footsteps. Although it sounds like my father's dream that I will become a teacher, it is also my dream and I am quite willing to realize the dream. I still have one more year to go at university, and after I graduate, I will go to the western part of China to become a teacher at a village school. I understand a teacher's job will not make me a millionaire, but it is not the prospect of making a lot of money that has propelled my ambition to become a teacher. Rather, it is my sincere desire to assume a responsible role in society, and make as many people well--educated as possible through my hard endeavors. Education plays an essential and important role in our society. If everyone can receive a good education, it will not only do good to our country but also benefit individuals' lives. Ten years from now, therefore, I hope to be established as an excellent teacher with hundreds of thousands of students who have benefited from me and carry on the family tradition with efficiency and honour. 
 Answer: A researcher.
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What's the author now?


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Article: The European Union on Monday prohibited the use of X-ray body scanners  in European airports, parting ways with the U. S. Transportation Security Administration, which has used hundreds of the scanners as a way to screen millions of airline passengers for explosives hidden under clothing. The European Commission, which enforces common policies of the EU's 27 member countries, adopted the rule "in order not to risk doing harm to citizens' health and safety." As a ProPublica/PBS NewsHour investigation detailed earlier this month, X-ray body scanners use ionizing radiation  ,a form of energy that has been shown to damage DMA and cause cancer. Although the amount of radiation is extremely low, equal to the radiation a person would receive in a few minutes of flying, several research studies have concluded that a small number of cancer cases would result from scanning hundreds of millions of passengers a year. European countries will be allowed to use an alternative body scanner relying on radio frequency waves, which have not been linked to cancer. The U. S. Transportation Security Administration (TSA) has also used hundreds of those machines --known as millimeter-wave scanners --in U. S. airports. But unlike Europe, it has decided to use both types of scanners. The TSA would not comment specifically on the EU 's decision. But in a statement, TSA spokesman Mike McCarthy said, "As one of our many layers of security, TSA uses the most advanced technology available to provide the best opportunity to detect dangerous items, such as explosives. " We strictly test our technology to ensure it meets our high detection and safety standards before it is placed in airports," he continued. "Since January 2010, advanced imaging technology has detected more than 300 dangerous or illegal items on passengers in U. S. airports nationwide." Body scanners have been controversial  in the United States since they were first used in prisons in the late 1990s and then in airports for tests after 9/11. 
 Answer: They won't risk causing cancer.
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Which of the following is true about the new body scanners to be used in Europe?.


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Article: Inland waters may be grouped into two general classes: standing waters and flowing waters. As is often the case, the boundary between these two classes is not sharp and clear. A pond is an example of standing water. But most ponds are fed by springs or brooks and most have an outlet. Thus some current of changing water flows through them. On the other hand, a river is an example of flowing water. In some places, however, a river may have such a slow current that it is very difficult to detect. Standing inland waters differ in size, in age, and in many _ environmental characteristics. They range in size from roadside puddles to the Caspian Sea. Puddles may last for only a few days or weeks; ponds, for a few hundred to a thousand years. In general, lakes are older, though the waters of some tropical "lakes" disappear completely during each dry season. Standing waters vary from very shallow to very deep, from clear to muddy, from fresh to salty. In flowing waters we roughly distinguish between brooks, creeks, and rivers. The size and age of flowing waters are unimportant. Speed of flow, clearness, oxygen content, and other chemical characteristics are used by scientists in studying flowing-water ecosystems. 
 Answer: Size.
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According to the passage, which of the following characteristics of flowing waters is unimportant?


