【单选题】A 70-year-old man enters the hospital emergency department and has been experiencing severe diarrhea(腹泻). He has pallor, tachycardia, and an arterial pressure of 80/50, and has trouble walking. Which ...
【单选题】Scientific exploration, the search for knowledge, has given man the practical result of being able to shield himself from the calamities of nature and the calamities imposed by others. 最合适的译文 ______