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【单选题】
下列关于内存和外存的叙述，错误的是A.
断电后存放在外存中的信息不会丢失，可以长期保存
B.
外存的容量比内存大的多，甚至可以说是的
C.
外存速度慢，内存速度慢
D.
内存和外存都是由半导体器件构成的
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【单选题】____ in the United States, St Louis has now become the 4 th largest city.
A.
It is the 24 th biggest city
B.
It was the 24 th biggest city
C.
Before the 24 th biggest city
D.
Once the 24 th biggest city
【单选题】London will be the 30th city _____ holds the Olympic Games. [ ]
A.
where
B.
that
C.
which
D.
what
【单选题】—Which do you like better, the country life or the city life? —_____. On weekdays I like living in the city, but I usually spend my weekends and holidays in the country. [ ]
A.
Sounds good
B.
I think so
C.
It's hard to say
【单选题】Beijing is the 20th city _____ holds the Olympic Games. [ ]
A.
where
B.
that
C.
whom
D.
which
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