Bees are flying insects that are found all over the world.
There are over twelve thousand different species of bees, but only
two thousand of these occur in north America.
Bees can be divided into two groups according to their living
styles. Solitary bees live alone. On
the other hand, social bees, like ants, live in groups. Only about
six hundred species are of this social category.
Social bees are interesting because in their 'society' there
are different classes of bees. Each class performs a different
task. Queen bees lay eggs. Workers are underdeveloped females. They work in the
hive but never reproduce. Males do not
work; their only task is to mate with the queen.
Solitary bees occur as males and females. Every female m
书籍是人类的精神食粮。读书不仅是一个人修养的标志，还是人们塑造自我．完善人格．提升思想和获得智慧的重要途径。书籍承载．记录．积累和传播人类的知识。读书对一个人的成长起着重大作用。一本好书可能会决定或改变一个人的生活方向。而一个热爱读书的民族，是有智慧和有希望的民族。中国人民具有崇尚知识的传统，我们把读书当作获取知识．陶治情操和推动社会进步的方式。古人说：“开卷有益。“应鼓励青年人以读书为乐趣，培养专心致志读书的习惯。读书时，还应学以致用，理论联系实践。
Books are the spiritual food of humankind. Reading is not only
a mark of a person's self-cultivation, but also an important way
for people to mould themselves, perfect their characters, elevate
their minds, and gain wisdom. Book carry, record, accumu
加载中…
