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单选题
It could be dangerous because the leaking gas might easily penetrate the building.
A
overlap
B
retreat from
C
spread through
D
reach
参考答案
参考解析
解析：
句意：泄露的油可能会渗透到整个大楼，这很危险。penetrate渗透。spread through蔓延开来。overlap重叠。retreat from退出；放弃。reach到达。
句意：泄露的油可能会渗透到整个大楼，这很危险。penetrate渗透。spread through蔓延开来。overlap重叠。retreat from退出；放弃。reach到达。
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