在钻芯取样检验混凝土强度时，芯样直径应为混凝土所有集料最大粒径的______
A．1倍 B．2倍 C．3倍 D．1.5倍
参考答案：C
______ the poem a second time, the meaning will become clearer to you.
A．You having read
B．While reading
C．When you read
D．If reading
月骨脱位压迫正中神经，手部感觉异常区域是（）。
A.尺侧二个半指
B.尺侧三个半指
C.尺侧三指
D.桡侧一个半指
E.桡侧三指
