单项选择题

According to the context tooth transplanting ______.

A．will not be realized in the near future
B．is still at a trial period
C．is but a dream
D．has been widely practiced
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单项选择题
According to Asselborn, which would lay down a solid road for the lifting
A．the strategic partnership between the ELI and China
B．the dialogue in all areas
C．the British effort to strike a deal on the ELI code of Conduct on arms exports
D．the US-EU relationship
单项选择题
We should ______ when we want to glimpse inside the sun.
A．answer questions about its temperature
B．translate the sounds into images
C．know how gases inside ebb and flow
D．measure the pitch
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