单项选择题
For small，first-degree burns the quickest method to relieve pain is to（）.
A.immerse the burn in cold water B.administer aspirin C.apply petroleum jelly D.apply a bandage to exclude air
单项选择题 Drinking salt water will（）.
单项选择题 Chemical burns are caused by the skin coming in contact with（）.
单项选择题 Changing rescuers while carrying out artificial respiration should be done（）.
