试题题干
Translate the following sentence into Chinese.
Horses that are used for guard or police duty must learn never to be frightened of noises, traffic, and other disturbances.
参考答案
试题解析
考点：police duty警卫任务；be frightened of··· 害怕······；disturbance干扰。
句子结构：主语为Horses，that are used for guard or police duty为定语从句修饰horses。