What do we learn from the last paragraph?A.Scient

外语类 2020-04-28 00:20:47 已帮助人

What do we learn from the last paragraph?

A.Scientists are planning to install pipes in all crater lakes.

B.Scientists still do not know how to prevent gas explosions.

C.Explosion disasters could be avoided in the future.

D.Warning systems have been set up in the villages nearby.

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答案：C
前文表明，湖里竖起若干根减小湖底压强的管子后，就不会再有毒气喷发的危险。最后一段又说在这些管子都到位前科学家在这两个湖附近安装了早期预警系统，以便人们有时间逃离这些有毒气体.由此可知，这种有毒气体喷发的灾难在未来可以避免。