有关单质硫的性质的叙述，不正确的是( )
A．硫既有氧化性又有还原性
B．单质硫易溶于酒精，难溶于二硫化碳
C．硫有可燃性
D．硫有杀菌能力
答案：B
硫是一种较活泼的非金属元素，单质硫中硫所呈现的0价是硫元素的一种中间价态，既可得到电子显示氧化性变成-2价，也可失去电子显示还原性变成+4、+6价；单质硫难溶于水、微溶于酒精、易溶于CS2；硫易燃烧生成SO2；硫对某些皮肤病有一定的疗效，可杀菌。
The first day of university our professor introduced himself and challenged us to get to know someone we didn’t already know. I stood up to look around when a gentle hand touched my shoulder. I turned around to find a 11 ,little old lady beaming up at me with a smile that 12 her entire being. She said, “Hi, handsome. My name is Rose. I’m eighty-seven years old. Can I give you a hug?” I laughed and enthusiastically 13 , “Of course you may!” and she gave me a giant 14 . “Why are you in college at such a young, innocent age?” I asked. She 15 replied, “I’m here to meet a rich husband, get married, and have a couple of kids…” “No seriously,” I asked. I was 16 what may have motivated her to be taking on this 17 at her age. “I always dreamed of having a 18 and now I’m getting one!” she told me. Over the course of the year, Rose became a campus icon and she 19 made friends wherever she went. She loved to dress up and she enjoyed the attention bestowed upon her from the other 20 . She was living it up. At the end of the semester we invited Rose to speak at our football banquet. I’ll never forget what she taught us. “We do not stop playing because we are old; we grow 21 because we stop playing. There are only four 22 to staying young, being happy and achieving success. You have to laugh and find humor every day. You’ve got to have a dream. When you lose your 23 ,you die. Anybody can grow older. That doesn’t take any talent or 24 . The idea is to grow up by always finding opportunity in 25 . Have no regrets.”
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