问题
单项选择题 B型题
常用抗原抗体凝集反应中，“是一种能与肺炎链球菌C多糖发生的急性时相反应蛋白，具有激活补体，促进吞噬和免疫调理作用，主要由肝产生”属于（）
A.单一的IgE增高
B.单一的IgA降低
C.C反应蛋白（CRP）测定
D.抗链球菌溶血素“O”试验
E.类风湿因子（RF）乳胶凝集试验
答案
参考答案：C
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常用抗原抗体凝集反应中，“是一种能与肺炎链球菌C多糖发生的急性时相反应蛋白，具有激活补体，促进吞噬和免疫调理作用，主要由肝产生”属于（）
A.单一的IgE增高
B.单一的IgA降低
C.C反应蛋白（CRP）测定
D.抗链球菌溶血素“O”试验
E.类风湿因子（RF）乳胶凝集试验
参考答案：C
We’ve all done it at one point or another. You’re driving along to work or school when that familiar sound reaches your eardrums(耳膜). You look down, reach into your pocket and begin to read, your steering wheel(方向盘) in one hand, your phone in the other. As you respond to that text message from your friend, you look intermittently(间歇地) at the road, and then back down at your phone. You’ve done it plenty of times before. What can go wrong? What do you think is the number one killer of teenagers in the U.S.? Drugs? Alcohol? Violence? The answer is distracted driving. According to the National Safety Council, over 24 percent of all motor vehicle crashes involve cell phone use. Either a quick 30-second phone call or a simple text reading may be the cause of a traffic accident. In addition, drivers who talk on a cell phone, whether hands-free or not, are four times more likely to crash. The risk of teenagers getting into an accident rises sharply. According to keepthedrive.com, more than 3,000 teenagers die in car accidents each year with about another 450,000 teenagers being injured. Additionally, according to a University of Utah study, reading or sending even one text message is equal to having a 0.08 alcohol level. In most states, that is considered as drunk-driving. So, how do you prevent yourself from the danger of distracted driving? The answer is simpler than you might think. Put your phone away. Mute(消音) your phone or just turn it off while driving. If you still can’t help reaching for your phone, throw it on the backseat. This way, you won’t be able to get to it until you arrive at your destination. You may get away with talking on the phone now, but there may be a day when you don’t. Dropping your phone may be an inconvenience, but it’s better than being a victim of your distracted driving.
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