Proper first aid can save a seriously injured person,especially when he or she i
题型:不详难度:来源:
Proper first aid can save a seriously injured person,especially when he or she is bleeding heavily or______.A.has poisoned | B.was poisoned | C.has been poisoned | D.is poisoning |
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答案
C |
解析
本题考查现在完成时。从语境可知,应当用现在完成时的被动语态。 |
举一反三
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