His grandfather ____ ____ a lot of hardships during the war.
x－0.15x=8.5
x=（ ）
Security devices at airports are ______ to spot weapons that could be used by terrorists.
烈日下狗通过伸长舌头可增大舌头上唾液的____，快速喘气可加快唾液表面空气流速，从而加快唾液的蒸发，而蒸发____热量，使狗感到凉快。
《出师表》中最能表现诸葛亮感情的六个字是____，____。
