A：trouser
B：trousers
图是“测定反应速度”的探究实验，下列叙述错误的是（ ）
下列几何体中，同一个几何体的主视图与俯视图不同的是（ ）
—________ great fun we had at the party last night!
—Yes， it was so exciting that everyone was happy.
