【名词&注释】
大肠杆菌(escherichia coli)、皮肌炎(dermatomyositis)、硬皮病(scleroderma)、抗体阳性率(antibody positive rate)、类风湿性(rheumatoid)、有价值(valuable)、SLE活动性
[单选题]下列风湿性疾病中抗dsDNA抗体阳性率最高的是
A. 类风湿性关节炎
B. 硬皮病
C. 骨关节炎
D. 系统性红斑狼疮
E. 皮肌炎
查看答案&解析
举一反三：
[单选题]Which of the following best summarizes the main idea of the passage?
A. The Internet is posing a threat to publishers.
B. A new mode of publication is emerging.
C. Authors welcome the new channel for publication.
D. Publication is rendered easier by online service.
[单选题]The estimates in Economic Outlook show that in rich countries
A. heavy industry becomes more energy-intensive.
B. income loss mainly results from fluctuating crude oil prices.
C. manufacturing industry has been seriously squeezed.
D. oil price changes have no significant impact on GDP.
[单选题]大肠杆菌DNA分子经过连续两代的半保留复制，第2代中来自亲代的DNA含量与总DNA含量的比值是
A. 1／2
B. 1／4
C. 1／8
D. 1／16
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