单项选择题
I find （）
A.it difficult for them to finish the job in time
B.difficult for them to finish the job in time
C.they have much difficulty to finish the job in time
D.that difficult for them to finish the job in time
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The first step you would take in helping an unconscious victim who is not breathing is（）
A.stop bleeding
B.open airway
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A.station bill
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C.certificate of inspection
D.permit to proceed
