单项选择题

What is the biggest reason for not using more solar power now

A．There is no space to put in solar units.
B．It is decided by Mother Nature.
C．It is not the right time to use it.
D．It costs too much to use it.
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单项选择题
What does the speaker think of different media
A．They compete with each other.
B．They do good to each other~
C．They focus on different news.
D．They will die out.
单项选择题
How did the man know that the delegation is made up of seven people
A．He received a call from the delegation.
B．He discussed with the Poland delegation.
C．He knew it through the contract they signed.
D．He received an E-mail this morning and knew it.
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