The Great Transformation is caused by

A．the future of the world will be better and better.
B．technological advances will destroy the human race at last.
C．human technological advances are useless in people’s life.
D．there is no need to develop technology.

A．chemicals will wash away fields.
B．water levels will go up.
C．more and more land will be covered by ice.
D．land is turned into water deliberately.

A．decisive.
B．powerless.
C．hesitant.
D．mysterious.