New words：

boomerang ['bu:mə.ræŋ] n. 回力镖

Sample Sentences：

Select a boomerang for your age and ability and then learn how to throw.
Life is like a boomerang: if you're good, good things will always come back to you.

New words：

reality [ri'æləti] n. 现实；事实；实际情况
in reality 实际上；事实上

Sample Sentences：

Will time travel ever become a reality?
It takes time for a dream to become a reality.
Everyone likes the stranger, but in reality he is a criminal.

New words：

ostrich ['ɔstritʃ] n. 鸵鸟；逃避现实的人

Sample Sentences：

Face the reality. Stop being an ostrich.
Ostrich is a type of large bird that can run very fast.
The short-distance runner wishes he could run as fast as the ostrich.

reality [ri'æləti] n. 现实；事实；实际情况

New words：

kangaroo [.kæŋgə'ru:] n. 袋鼠
koala [kəu'ɑ:lə] n. 树袋熊；考拉熊；无尾熊

Sample Sentences：

Australia is the hometown of kangaroos.
The mother kangaroo has a special bag for her baby.
There are over 600 animals there, including kangaroos, koalas and crocodiles.

New words：

attract [ə'trækt] v. 吸引；招引；使喜爱

Sample Sentences：

The panda attracted many children.
She gave a little cough to attract my attention.
They were attracted to each other from the first.
The flower show attracted large crowds this year.