问题
单项选择题
有关抗核抗体（ANA）是抗细胞核成分的抗体的总称，以下说法错误的是（）。
A.健康人ANA均阴性
B.系统性红斑狼疮ANA的滴度常大于1：80
C.干燥综合征可以出现ANA阳性，多呈斑点型
D.硬皮病患者ANA可以高滴度阳性
E.ANA可出现于慢性感染性疾病，如结核、SBE
答案
参考答案：A
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有关抗核抗体（ANA）是抗细胞核成分的抗体的总称，以下说法错误的是（）。
A.健康人ANA均阴性
B.系统性红斑狼疮ANA的滴度常大于1：80
C.干燥综合征可以出现ANA阳性，多呈斑点型
D.硬皮病患者ANA可以高滴度阳性
E.ANA可出现于慢性感染性疾病，如结核、SBE
参考答案：A
Doing exercise can help people keep healthy. Do you often jog(慢跑)? Jogging became popular about twenty years ago and now it is a favorite way of keeping fit for lots of people. People of any age like to do it. Children can jog and old people can jog, too. They can jog anywhere. People jog around college(大学), around houses, and in parks. Jogging doesn’t need any training. Do some warm-up exercises(热身练习) and then you are ready to start. Jogging is good for health. It is good for lungs and the heart. It is easy and convenient(方便的). 根据短文内容，完成下面的表格。（每空词数不限）
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