When the writer first went to the Red Cross clinic in Beijing to donate his bloo

游客2024-07-09  12

问题 When the writer first went to the Red Cross clinic in Beijing to donate his blood he was surprised ______. [br] The number of voluntary blood donors in Beijing in 1993 is ______.

选项 A、more than 30,000
B、more than 28,000
C、more than 15,000
D、more than 14,000

答案 B

解析
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