题目内容
【题目】If burns are on arms or legs，keep them higher than the heart，________.
A．if it possible B．if possible
C．if you are possible D．if is possible
【答案】B
【解析】把B项补充完整为：if it is possible，常省略为if possible。
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题目内容
【题目】If burns are on arms or legs，keep them higher than the heart，________.
A．if it possible B．if possible
C．if you are possible D．if is possible
【答案】B
【解析】把B项补充完整为：if it is possible，常省略为if possible。
