Humans have five senses：sight，hearing，taste， （1）s

mell

mell

and touch.We use these senses every day in our lives when we work，play，eat and drink.Animals have senses too，and sometimes they work much better than ours.We have our food prepared for us—but animals need to （2）f

ind

ind

their own food using their senses.For example，animals that hunt other animals often have very good sight.Some birds can see a mouse at a （3）d

istance

istance

of 1.5 kilometres.However，they don't always catch the mouse.Mice have very，very good hearing and this helps them stay away from danger!Insects sometimes have senses that are （4）d

ifferent

ifferent

from ours.For example，butterflies don't taste with their mouth—they taste with their feet.Crickets （蟋蟀）don't hear with their ears—they hear with their legs.Chameleons （变色龙） have two eyes，but they can move their eyes separately and look in two different directions at the same time!Some animals seem to have a special sense that tells them about the future.Birds，ants and many other animals are busier looking for food just before bad weather.This helps them stay alive because it is more difficult to find food when the weather is bad.Birds also use this （5）a

bility

bility

to get out of bad weather when they fly long distances.For centuries，people have noticed that animals often behave （6）s

trangely

trangely

before an earthquake.For example，in January 1975，a lot of farmers in one part of China told scientists that their horses and cows did not want to go into barns（畜棚）.A few days later，there was a large earthquake in that region.Do animals have a special sense that knows when earthquake will happen？The answer is probably yes，but scientists do not yet （7）u

nderstand

nderstand

how it works.