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【单选题】The Exploding Lakes of Cameroon What comes to mind when youthink of a lake? You probably imagine a pretty scene with bue water, brds, and fish. FOr the people in the northwestern Cameroon, however,the...
A.
Water will flow down the hills.
B.
Poisonous gases will bereleased suddenly.
C.
A strong wind will rise from the lakes.
D.
The volcanoes will come to life.
【单选题】The Exploding Lakes of Cameroon What comes to mind when you think of a lake You probably imagine a pretty scene with blue water, birds, and fish. For the people in the northwestern Cameroon, however,...
A.
the gases rise to the top and mix with air.
B.
people from the villages turn over the water.
C.
scientists have put in a computer system.
D.
they have more gases trapped at the bottom than other crater lakes.
【单选题】关于田纳西河流域自然地理特征的叙述正确的是
A.
流域内地形起伏小，水力资源不丰富
B.
流域内属于亚热带湿润气候，降水集中在夏秋季节
C.
田纳西河是密西西比河的一级支流，水量丰富但不稳定
D.
流域内矿产资源丰富，主要有煤、铁、铜等