小英在计算一道除法题时，把被除数160看作190，商比原来多3，而没有余数．请你计算出这道题的除数．

懂得一些燃烧与爆炸的基本常识可以避免一些危险事故的发生．下列图标与燃烧和爆炸无关的是（　　）

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    Hilversum is a medium-sized city between the major cities of Amsterdam and Utrecht in the Gooi area of North Holland, the Netherlands. Unlike most of the Netherlands, Hilversum is actually in a hilly area with the soil mostly consisting of sand. Once called the Garden of Amsterdam, it still attracts travelers to come over to cycle and walk through the surrounding forests. They visit it for a relaxing day off from the urban madness. For Dutch people, Hilversum is all about textile (纺织) and media industries, and modern architecture.

    In history, Hilversum was largely an agricultural area. Daily life was marked by farming, sheep raising and wool production. A railway link to Amsterdam in 1874 attracted rich traders from Amsterdam to Hilversum. They build themselves large villas (别墅) in the wooded surroundings of the town. One of the families moving in was the Brenninkmeijers, currently the wealthiest family of the Netherlands. They moved in after big success in the textile industry and aided a substantial textile industry in Hilversum. But the textile boom lasted only several decades. The last factory closed in the 1960s.

    The change to a media economy started in 1920, when the Nederlandse Seintoestedllen Fabriek (NSF) established a radio factory in Hiversum. Most radio stations called in the large villas in the leafy areas of the town. Television gave another push to the local economy. Hilversum became the media capital of the Netherlands, and Dutch televison stars moved into the leafy neighborhoods surrounding the town.

    In the early 1900s, modern architcts W.M. Dudok and J. Duiker placed hundreds of remarkable buildings in Hilversum. These modern architectural masterpieces (杰作) are so many that Hilversum almost feels like an open air museum. Dudok alone shaped most 20th century Hilversum and approximately 75 buildings in 1928-1931. It has wide international fame and is included in many architecture textbooks. The building has a remarkable shape and looks like a combination of “blocks”. Actually, one may start his journey of modern architecture by walking or biking the W.M. Dudok Architectural Route in Hilversum.

小数点后添上0或去掉0，小数的大小不变．

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    When I was in middle school, a poisonous spider bit my right hand. I ran to my mom for help —but instead of taking me to a doctor, my mom set my hand on fire. After wrapping my hand with several layers of cotton, then soaking it in wine, she put a chopstick into my mouth, and ignited the cotton. Heat quickly penetrated the cotton and began to roast my hand. The pain made me want to scream, but the chopstick prevented it. All I could do was watch my hand burn —one minute, then two minutes— until mom put out the fire.
    You see, the part of China I grew up in was a rural village, and at that time preindustrial. When I was born, my village had no cars, no telephones, no electricity, and even no running water. And we certainly didn't have access to modern medical resources. There was no doctor my mother could bring me to see about my spider bite.
    For those who study biology, you may have grasped the science behind my mom's cure: heat deactivates(使失去活性) proteins, and a spider's venom (毒液) is simply a form of protein. It's cool how that folk remedy actually incorporates basic biochemistry, isn't it? But I am a PhD student in biochemistry at Harvard, I now know that better, less painful and less risky treatments existed. So I can't help but ask myself why I didn't receive one at the time.
    Fifteen years have passed since that incident I am happy to report that my hand is fine. But this question lingers, and I continue to be troubled by it. We have learned to edit the human genome(基因组) and unlock many secrets of how cancer progresses. We can control neuronal activity literally with the switch of a light. Each year brings more advances in biomedical research—exciting, transformative accomplishments. Yet, despite the knowledge we have accumulated, we haven't been so successful in distributing it to where it's needed most. According to the World Bank, twelve percent of the world's population lives on less than $ 2 a day. Malnutrition kills more than 3 million children annually. Three hundred million people are suffering malaria globally. All over the world, we constantly see these problems of poverty, illness, and lack of resources preventing the flow of scientific information. Life-saving knowledge we take for granted in the modern world is often unavailable in these underdeveloped regions. And in far too many places, people are still essentially trying to cure a spider bite with fire.