问题
单项选择题
对于手足口病例，下列哪种标本核酸检测阳性率最高（）
A.脑脊液
B.咽分泌物
C.血液
D.尿液
E.粪便
答案
参考答案：B
解析：手足口病患者肠道病毒特异性核酸检测以咽、气道分泌物、疱疹液、粪便标本的阳性率为高。
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对于手足口病例，下列哪种标本核酸检测阳性率最高（）
A.脑脊液
B.咽分泌物
C.血液
D.尿液
E.粪便
参考答案：B
解析：手足口病患者肠道病毒特异性核酸检测以咽、气道分泌物、疱疹液、粪便标本的阳性率为高。
China is a country that is changing very quickly over the past fifty years and 1 you look closely(仔细地) you can see it 2 in front of your eyes. Fifty years ago, everybody travelled around by bike. Today lots of people in China still ride their bikes 3 school or work, but many people also take the bus or travel 4 underground. There are some people who even drive their own cars. Shops 5 small businesses but now the centre of China’s cities are full of 6 department stores. In these department stores, you can buy 7 you want in one trip. You can buy food, toys, bikes and even televisions. Television is 8 change that China has seen. Many children would say that they can not imagine life 9 TV set , but years ago they had to live without them. The Internet and the computer have only recently become regular items in our lives. Without the Internet, people would not 10 to get information as quickly as they can now and the Internet helps to make people 11 friends all over the world. Computers help 12 children and adults in their 13 lives Many students are lucky enough 14 able to use them to do their homework or 15 with their friends and sometimes play games.
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