B
There are many things honeybees need to know in order to work together, to keep the beehive(蜂窝)alive. They need to make honey, so they tell each other how to reach flowers.
How do bees know where to find the flowers? In 1943, Karl von Frisch, a scientist, found that bees communicate(交流)by dancing. Here's how it works: bees fly around looking for flowers. A flower's strong smell and bright colours attract the bee. When a bee finds those flowers, it goes back to the hive and does a special "dance". There are "round dances" that bees do when the flowers are close to the hive. There are also
"waggle dances" which bees do when the flowers are far away. The bee acts in one of these ways to show other bees where the flowers are and how far away they are.
Bees also produce chemicals(化学物质)to communicate. If an animal like a bear goes near the beehive, the bees' bodies start to make these special chemicals. Other bees sense them and know that the hive is in danger. They all start to fly out to sting(叮咬) the animal and drive it away.
You can see there are many ways to communicate, and they are different from what people do. Next time you see a honeybee on a flower, think about how bees communicate with each other.
() 4. Honeybees do "round dances" when .
A. they lose their way
B. they attract other animals
C. they find flowers far away
D. they find flowers close to the hive
() 5. What can we know about bees from the passage?
A. They communicate in the same way as humans.
B. They don't work together when searching for food.
C. They produce chemicals when reaching the flowers.
D. They communicate by dancing and producing chemicals.
() 6. Where can we read the passage?
A. In a fantasy story. B. In a geography book.
C. On a science website. D. In a travel magazine.

4. D 5. D 6. C