单项选择题

In paragraph 1 the author introduces his topic by relating______.

A．the idea of humanoid robots
B．Karl Capek's creation of robots
C．Hollywood's production of robot films
D．the origin of and popular films about robots

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填空题

As early as 1896 scientists suggested that burning fossil fuels might change______.

单项选择题

Was it a he or a she (Line 6, Para.2) may be replaced by______.

A．Who did it
B．Who was the person who wrote it
C．Did he or she write it
D．Was it written by a man or a woman