问答题

By making vehicles lighter in weight, aluminum ____________________ (大减少了开动它们所需的燃料).

【参考答案】

has greatly reduced the amount of fuel needed to move them.
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单项选择题
A．The man is handsome.B．The man used to be unhealthy.C．The lecture is not very clearD．The man has become a better person.
A．The man is handsome.
B．The man used to be unhealthy.
C．The lecture is not very clear
D．The man has become a better person.
填空题
The reason why a computerized cash register in the grocery store shows that an item costs more than it actually does is that ______.
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