不定项选择题 <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251125/2651407_0.jpg"><br/> <img border="0" alt="" src="https://tuku.weimei168.com/uploads/upimg/20251125/2651407_0_1.jpg"><br/> A. 2.50 B. 2.75 C. 3.75 D. 5.75<br />