单项选择题

What is the best title for the passage

A．Technological Achievements
B．Environmental Pollution
C．Economical Progress and Better Awareness of the Nature
D．The Future is Purchased by the Present

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单项选择题

The passage implies that our present technological achievements ______.

A．are successful but not harmful
B．have not been recognized
C．bring about both positive and negative results
D．are Changing in recent time

单项选择题

The author of the passage seems to be ______.

A．against future Changes in our life style
B．positive about our present situation
C．serious and hopeful in seeing a shift from the emphasis on economical progress to a better awareness of the nature
D．sorry for a decrease in defense expenditure