问题
单项选择题
患儿女性，3岁，近日明显消瘦、疲乏。体检：颈部淋巴结肿大，疑为原发性肺结核。观察结核菌素试验反应的时间为
A．注射后的20min
B．注射后的1h
C．注射后的24h
D．注射后的48h
E．注射后的72h
答案
参考答案：E
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患儿女性，3岁，近日明显消瘦、疲乏。体检：颈部淋巴结肿大，疑为原发性肺结核。观察结核菌素试验反应的时间为
A．注射后的20min
B．注射后的1h
C．注射后的24h
D．注射后的48h
E．注射后的72h
参考答案：E
Everyone should do something to protect the environment. How did we help to save our earth this week? Let me tell you. First, my family try to save . We never left the lights on when leaving the rooms. We turn off the TV when is watching it. Mom only uses cold water in the washing machine. Second, we also start recycling this week. We to write on both sides of the paper, not just on one side. We also our rubbish into different bags for bottles, cans, paper and food. Mom keeps the plastic shopping bags from the supermarket to use them again as rubbish bags. These are great to help our environment. Third, my family also save water. We never take long baths and have short showers . We wash the toilet with used water. My sister and I don’t the tap running when we brushed our teeth. At last, mom and dad begin to save gas. Mom to drive us to school, but now my sister and I start riding our bikes to school. It’s hard work good exercise! This week dad and his workmates(同事) also start to go to work together in one and share the cost. This also help reduce greenhouse gases. These are great ways to help protect our environment.
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