Lava bursts out where there is

题库:综合类 类型:最佳选择题 时间:2017-07-03 03:14:12 免费下载:《单选题》Word试卷

Lava bursts out where there is
A.a crack in the earth.
B.a mountain by the sea.
C.a big fire.
D.steam and gas.

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