题目

My cousin often goes to school bus, but sometimes he goes a car with his father.A. by; in B. in; by C. by; by D. on; by 答案：【答案】A【解析】句意：我表哥通常乘公交去上学，但是有时也坐他爸爸的车。考查交通工具的表达法，by＋交通工具的单数；on／ in one’ s/a ＋交通工具。第一个空是乘公交车用by bus；第二个空是坐小轿车用in a car。故此选择A。如图，已知△ABC中，AB=AC，把△ABC绕A点顺时针方向旋转得到△ADE，连接BD，CE交于点F，求证：△AEC≌△ADB．