题目

下列对数据的几种描述中，合理的是（      ） A、用pH试纸测得盐酸pH = 3.20 B、用托盘天平称取NaCl固体5.85g C、用10mL量筒量取98﹪浓H2SO43.68mL D、用“pH计”测得某血浆pH = 7.40 答案：D— Is that true? — Yeah. I _____ it possible, if I hadn't seen it happen. [     ]A. didn't believeB. won't believeC. hadn't believedD. wouldn't have believed