用地道（隧道）从相交道路下方穿过的交叉方式称为上跨式立体交叉。
参考答案：错
人类免疫缺陷病毒
What happened just now shows knowledge of first aid can make real difference in an emergency. [ ]
A. the；a
B. a；a
C. ／；a
D. a；the
