单选题：The black-and –blue symptom of a sprain means

题目内容：

The black-and –blue symptom of a sprain means A．pressing one’s ankle
B．a tight bandage
C．applying a cold pack
D．bleeding under the skin

参考答案：

答案解析：

They didn't realize how serious the problem was.

They didn't realize how serious the problem was.A．know B．forget C．doubt D．rememb

分类：卫生类题型：单选题

He finally achieved success after a lot of failures.A．reached B．existed C．attain

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分类：卫生类题型：单选题

A、B两种药物制剂的药物剂量-效应关系曲线比较见下图，对A药和B药的安全性分析，正确的是（　　）A．A药的治疗指数和安全范围大于B药 B．A药的治疗指数和安全范

分类：卫生类题型：单选题

某药抗一级速率过程消除，消除速度常数K=0.095h-1，则该药半衰期为（　　）A．8.0h B．7.3h C．5.5h D．4.0h E．3.7h

分类：卫生类题型：单选题