北师大版英语高二下册unit24society同步测试

北师大版英语高二下册unit24society同步测试内容摘要：

C. She could answer the passengers’ questions. D. She could do nothing. 62. Why do you think they had not a backup puter? A. Because it was easy down B. Because it was very expensive. C. Because it was not advanced enough. D. Because it was not as big as the main puter. 63. The last paragraph suggests that _______. A. a modern puter won’ t be down. B. puters can take the place of humans C. sometimes a puter may bring suffering to people D. there will be great changes in puters C Each year, nearly 20,000 people die from lung cancer caused by exposure to radon(氡 ). A mon source of exposure to radon that can be avoided is exposure in the home, yet only one in five homeowners has actually tested for radon. January is National Radon Action Month and the . Environmental Protection Agency is urging people to test their homes. “ Healthy homes make for healthy families,” said Bill Wehrum, EPA’s (Environmental Protection Agency) acting assistant administrator for the Office of Air and Radiation. “EPA is encouraging people to test for radon — a simple step to providing peace of mind.” Radon is a radioactive gas that seeps(渗透 ) into your home from underground, and can reach harmful levels if trapped indoors. The only way to know if your home contains high radon levels is to test for it. Nearly 80 percent of American homes have not been tested for radon, even though a simple test costing as little as $25 can help detect a possible radon problem. If radon is found, homeowners should find qualified professionals to reduce radon exposure for a cost similar to many mon home improvement repairs. Because we can’t see or smell radon, it’s a real challenge for us when trying to raise awareness about its public health risk. Radon is the secondleading cause of lung cancer in the United States, but it is pletely preventable. People can protect their family with a simple first step, and then take action to prevent radon exposure by testing their homes. The EPA is launching a campaign to inform people about radon and is working with anizations across the country to educate the public on how to protect themselves from radon exposure in their homes. It is also encouraging the use of radonresistant construction materials. 64. If we find out that there is too much radon in our homes, we should ______. A. deal with it by ourselves B. turn to professionals for help C. leave it alone D. repair the house 65. It can be inferred from the passage that ________. A. it will cost people a lot of money to test for radon B. most of today’s houses can’t resist radon effectively C. everyone understands the danger of radon D. it is hard for homeowners to stay away from radon 66. By saying “Healthy homes make for healthy families”, Bill Wehrum means ______. A. a healthy home environment is good for people’s health B. a healthy home can make people live a happy life C. healthy families never suffer from radon D. healthy homes don’t need to be tested for radon 67. Which of the following is the best title for the passage? A. EPA—an Important National Organization B. How to Avoid Harmful Gases C. Radon—the Main Cause of Lung Cancer D. A Radon Test Can Help Prevent Lung Cancer D Many years ago my student asked me the question, Mrs. Kindred, why do you teach? Without taking time to reflect, I answered, Because someday I might say something that might make a difference in someone39。 s life. Even though I was sincere, that wasn39。 t a very good answer and my student didn39。 t let it slide. Let me get this straight, he said, You went to college for four years so you could e here every day because you have the hope that someday you might say something that will influence someone? He shook his head as if I were crazy and walked away looking confused. I39。 m one of those people who look back and wish they had said something smart or witty, or swift. Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach: It39。 s in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(逐渐灌输 ) in me a love of reading and the knowledge that education opens doors. Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can39。 t have ripples without a stone. Good teachers throw stones that make a positive difference, and that39。 s what I strive to do. I genuinely love teenagers. I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they39。 ll allow me to celebrate their victories with them, I want to do too. Teaching isn39。 t for everyone, but I know I made the right career choice. 68. Why did the student continue to ask the question about the writer’s being a teacher? A. Because he thought her answer was unbelievable. B. Because the writer was insincere. C. Because the student was naughty. D. Because the answer was difficult to understand. 69. What do you think of the writer? A. Stupid. B. Honest. C. Conservative. D. Polite. 70. We can infer from the text that _________. A. the writer was also a good teacher in school B. the writer often plays with her students beside a pond C. the writer devotes herself to teaching and h。