单项选择题

It is onlY recent years that mall found that the protection of our environment is DO small matter to our fives．

A．直到近年来人们才发现，保护环境对我们的生存至关重要。
B．直到近年来人们才发现，环境保护在我们的生活中并不是一件小事。
C．只需几年人们就会发现，环境保护不过是生活中的一件小事。
D．直到前几年人们才发现，保护环境在我们的生活中不是一件容易的事情。
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单项选择题
It’ s very important for those who take E244 to __________
A．talk as much as they can
B．prepare the course before the class
C．look up every unknown word and phrase
D．recite each lesson
单项选择题
With the broadband technology companies can have all their operations done __________
A．during the work days.
B．during the whole week
C．online
D．offline
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