单选题
[填句补文]Bees are flying insects closely related to wasps and ants， and are known for their role in pollination （授粉）and for producing honey and beeswax.
________ The best-known bee species is the European honey bee， which， as its name suggests， produces honey， as do a few other types of bee.
A.There is only one queen in a hive.
B.Every bee does a job without being told.
C.There are nearly 20，000 known species of bees.
D.Bees do not like ice and snow.
正确答案：C
答案解析：答案选C。空格是首句，通过空格后的内容判断首句内容，紧着空格的那句话提到了关键词species，有关蜜蜂的种类的，然后浏览各选项，不难看出C选项最符合上下文语境。