单项选择题

The author presents the passage by

A．giving a definition and explaining it in detail.
B．countering an argument and making an assumption.
C．introducing a general topic and comparing two of its subcategories.
D．discussing a problem and arguing in favor of one solution.

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单项选择题

The Great Transformation is caused by

A．artificial intelligence and genetic engineering.
B．the shortage of natural resources.
C．the development of practical science.
D．unknown reasons.

单项选择题

According to the passage, pessimists believe that

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.