单项选择题

The principle discovery in this century shows ______ .

A．man has overthrown Newton' s laws of physics
B．man has solved a new set of gigantic puzzles
C．man has lost many scientific discoveries
D．man has given up some of the once accepted theories

<上一题目录下一题>

热门试题

单项选择题

What can't be inferred from the 1st paragraph

A．Scientific experiments in the past three hundred years have produced many valuable items~
B．For three hundred years there have been people holding hostile attitude toward science.
C．Modern civilization depends on science so man supports scientific progress unanimously.
D．Three hundred years is not long enough to settle back critical appraisal of scientific metho

单项选择题

The writer's attitude towards science is ______ .

A．critical
B．approving
C．neutral
D．regretful