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【简答题】
矿石 ：指矿石中有用组分的含量；
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举一反三
【简答题】instant messaging
【单选题】听力原文：Now, text messaging is increasingly being used by UK hospitals to remind patients about outpatient appointments—and could potentially save the National Health Service millions of pounds every yea...
A.
正确
B.
错误
【单选题】There is an ongoing debate about the potentially harmful effects ________ text messaging can have on people's grammar.
A.
what
B.
who
C.
that
D.
whose
【单选题】An (71) service bus (ESB) acts as a shared messaging layer for connecting applications and other services throughout an enterprise computing infrastructure. It supplements its core (72) messaging back...
A.
encapsulation
B.
enterprise
C.
extention
D.
encode
【单选题】What has been done about text messaging?
A.
Evidence is now being collected to fight against text messaging.
B.
Bus drivers and train drivers are forbidden to text messages.
C.
Some laws about text messaging have been put into effect in America.
D.
Some actions have been applied to solve the trouble caused by text messaging.
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