单项选择题

Iron replaced stone and timber in the building of bridges because iron was considered ______

A．more beautiful
B．much stronger
C．easier to transport
D．new and modern
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单项选择题
How did the artistic elite mentioned in the passage react to the buildings at the Paris Exhibition
A．They praised them.
B．They tried to copy them.
C．They ridiculed them.
D．They refused to pay to see them.
单项选择题
Scientists discovered that people's emotions are ______
A．controlled by their facial expression
B．influenced by their facial expression
C．identical with their facial expression
D．contrary to their facial expression
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