In the last paragraph, "play down their visibility" refers to ______.
A. "show off"
B. "be very modest"
C. "not show them"
D. "to debase themselves"
查看答案
The author's purpose of writing this passage is to ______.
A. explain why people have emotions
B. show how people avoid the negative emotions
C. explain what people should do before emotions
D. define and classify people's emotions
对急性肾小球肾炎最具有诊断价值的实验室指标是( )
A. 轻度贫血
B. 外周血白细胞计数增高
C. 血沉增快
D. 抗链球菌溶血素"O"(As0)增高
E. 血清总补体及C3-过性明显下降
为明确诊断，待生命体征平稳后进一步检查宜选择
A. 上消化道钡餐
B. 消化系统B超
C. 纤维胃镜
D. 腹部CT
E. 选择性腹腔动脉造影
血浆中降钙素主要来源于（）
A. 甲状腺C 细胞
B. 甲状旁腺细胞
C. 胎盘
D. 胰岛D 细胞
E. 消化道黏膜细胞
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