单项选择题

At first, the______ of color pictures over a long distance seemed impossible, but, with painstaking efforts and at great expense, it became a reality.

A．transaction
B．transmission
C．transformation
D．transition
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单项选择题
At the wedding ceremony, the diamond ring that he bought was______ on his bride's finger.
A．glaring
B．glittering
C．blazing
D．dazzling
单项选择题
Many rare species of plants and animals are threatened with______ with the worsening of environment and mass hunting.
A．migration
B．extinction
C．distinction
D．distraction
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