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单选题
The fire is spreading. Do not attempt to extinguish it.（）
A
火势得到了控制，不要试图扑灭它。
B
火势得到了控制，请试图扑灭它。
C
火势正在蔓延，不要试图扑灭它。
D
火势正在蔓延，请尝试扑灭它。
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