一根电线，用去32.87米，比剩下的多8.99米，这根电线长多少米？
解：32.87﹣8.99+32.87，
=23.88+32.87，
=56.75（米）．
答：这根电线长56.75米
词语运用
①The old man is d____.He can't hear anything.
②My dog is m____.Can you help me find it?
③All of them are ____(注视) at the computer screen.
④We don't know whether he's ____(活着)or dead.
⑤The road was so narrow(狭窄)that cars were unable to ____(通过).
小红站在竖直放置的平面镜前2m的地方，像到小红的距离为____
下列应用实例与采用的生物技术，搭配错误的是（ ）
Look! This is Lisa. She's thin.
