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单项选择题

The author says that modern weapons ______.

A．will help abolish war
B．make mankind live in a greater threat.
C．will gradually become part of man's life
D．need further improving
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单项选择题This passage implies that war is now ______.

A．more wicked than in the past
B．as wicked as in the past
C．less wicked than in the past
D．what people try to live with

单项选择题Which of the following conclusions is best supported by the second paragraph

A．Robot does not last long.
B．The early men made toys themselves.
C．Man has always had a desire to make a copy of him self.
D．The materials for making a copy of man are limited.