49. I can't bear having a cat in the house.

家中养猫我受不了。

50. The lion is called the king of beasts.

狮子号称百兽之王。

51. His father beat the disobedient boy.

他的父亲打那个不听话的男孩。

52. We heard the beat of the drum.

我们听到鼓声。

53. Looking at a beautiful painting always gives one satisfaction.

观赏一幅美丽的图画使人心满意足。

54. We enjoyed the beauty of nature.

我们欣赏大自然的美。

55. She is a beauty.

她是一个美人。

56. They hurried on because it was getting dark.

因为天色暗下来了，他们匆匆赶路。