单项选择题

It is only recent years that man found that the protection of our environment is no small matter to our lives.

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
How much does a user pay if he has broadband technology installed
A. It depends on the length of time.
B. It depends on the times of dial-up.
C. He pays at a fixed monthly rate.
D. He pays a lot of money.
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