问题
选择题
What happened just now shows knowledge of first aid can make real difference in an emergency. [ ]
A. the；a
B. a；a
C. ／；a
D. a；the
答案
答案：B
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What happened just now shows knowledge of first aid can make real difference in an emergency. [ ]
A. the；a
B. a；a
C. ／；a
D. a；the
答案：B