СОР № 1 Английский язык 11ЕМН класс Investigate and report on animal world: bats, eagles, bees and dolphinsНазад
Investigate and report on animal world: bats, eagles, bees and dolphins
Read the following passage and answer the questions that follow. Refer to the text to check
your answers when appropriate.
Have you ever heard the sound of a hummingbird? They make a buzzing noise when they fly.
They make this noise because they beat their wings so fast. They beat their wings up to 80 times a
second. All that flapping makes a lot of noise. That’s why we call them hummingbirds.
Hummingbirds fly in a unique way. They move their wings so fast that they can hover. This
means that they can stay in one spot in the middle of the air, like a helicopter. Sometimes they fly or
hover upside down. They are the only bird that flies backward.
Hummingbirds are small. One type called the bee hummingbird is the smallest bird in the
world. Bee hummingbirds weigh less than a penny. They are just a little bit bigger than bees. I guess
that’s where they get their name. Bee hummingbirds build tiny nests. They use cobwebs and bits of
bark to make their homes. Their homes are only an inch around. This is big enough for their eggs
though. Their eggs are smaller than peas. People have found these tiny nests on a clothespin.
Hummingbirds move fast. It takes lots of energy to move as fast as they do. This means that
they need to eat a lot of food. Their favorite food is nectar, a sweet liquid inside of some flowers.
They drink more than their own weight in nectar daily. They have to visit hundreds of flowers to get
enough nectar to live. They can only store enough energy to survive through the night. They live on
Hummingbirds don’t use their long beaks like straws. They have a tongue just like you. They
use their tongues for eating. They flick their tongues in and out of their mouths while inside of
flowers. They lap up nectar. Flowers give them the energy that they need.
Hummingbirds help flowers too. They get pollen on their heads and bills when they feed.
Flowers use pollen to make seeds. Hummingbirds help pollen get from one flower to the next. This
helps flowers make more seeds. More seeds mean more flowers. More flowers mean more food for
hummingbirds. Isn’t it nice how that works out?
1. Hummingbirds are the smallest birds on Earth (see facts about birds). The weight of the smallest hummingbirds among adults is not about three grams.
2. The largest of the hummingbirds are gigantic hummingbirds, the size of these birds reaches 21 centimeters, and the weight is 20 grams.
3. Hummingbirds have a huge, by their standards, heart — it is three times larger than the stomach, and occupies more than a third of the volume of their entire body.
4. The heart of a hummingbird makes 500-1000 beats per minute, and during its life it contracts about 4.5 billion times.
5. A hummingbird consumes more food per day than its own weight.
6. Hummingbirds can fly at speeds up to 70-80 kilometers per hour.
7. Hummingbirds never create permanent pairs.
A hummingbird makes up to 80 wing flaps per second.
8. In total, more than three hundred species of hummingbirds live on Earth.
9. The longest recorded life span of hummingbirds is 17 years, but on average they live less, about 9 years.
10. The hummingbird is the only bird that can fly backwards or upside down.