单项选择题

Which of the following is TRUE about good quality sunglasses

A．Those for kids are more expensive than for adults.
B．They are all made of optical glass.
C．They are becoming more and more expensive.
D．They can be made much lighter than before.
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单项选择题
As can be gathered from the passage, before 1910 the normal running time of a film was probably ______.
A．15 minutes or less
B．between 15 and 30 minutes
C．between 30 and 45 minutes
D．1 hour or more
单项选择题
What is Wilmington like now
A．It’s a prosperous city.
B．It has many veterans of war.
C．Its pretty buildings have been torn down.
D．It is no longer an agreeable place.
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