Gaokao Math Practice Question
7. (5 分) 正三棱柱 $A B C-A_{1} B_{1} C_{1}$ 的底面边长为 2 , 侧棱长为 $\sqrt{3}, D$ 为 $B C$ 中点, 则三棱雉 $A-B_{1} D C_{1}$ 的体积为 ( $)$
- A.3
- B.$\frac{3}{2}$
- C.1
- D.$\frac{\sqrt{3}}{2}$
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