A:a处是上粗下细,b处也是上粗下细
B:a处是上细下粗,b处也是上细下粗
C:a处是上细下粗,b处是上粗下细
D:a处是上粗下细,b处是上细下粗
下列实例与采用的生物技术搭配错误的是( )
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如图所示,杠杆处于平衡状态。若在两边的钩码下各加一个同样的钩码,则( )
On May 22, a Han taxi driver an old lady to the hospital as soon as he could in Xinjiang.