题目内容
（请给出正确答案）
[单选题]
_____birds can fly very high in_____sky.
A.The; a
B.The; the
C.The; /
D./ ; /
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A.The birds; the
B.The bird; /
C.Birds; the
D.Birds; /
更多“_____birds can fly very high i…”相关的问题
第2题
Not all birds can fly , ______ do all birds build nests.A. notB. noC. neverD. nor
A.A. not
B.B. no
C.C. never
D.D. nor
第3题
Biological Clock When the sun rises on a warm and sunny day, you can see some flowers open
up. When they close late in the afternoon, other flowers open. Biological rhythms（生物节律）, like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart, happen every second.______（26） Scientists use the term biological clock to describe the timing that controls biological rhythms.______（27）In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else. The migration of animals happens when a signal sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm.______（28） Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag（时差）.______（29）People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime. Biological clocks control many rhythms of life.______（30）Doctors are looking for new ways to make travelling more comfortable and medical treatment more effective. ______.A.But where can you find it？
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B.This makes them feel tired.
C.In the summer they fly back to have babies.
D.We are learning more and more about them.
E.Biological clocks can be adjusted.
F.Other rhythms are based on months, seasons or years.
______.A.But where can you find it？
B.This makes them feel tired.
C.In the summer they fly back to have babies.
D.We are learning more and more about them.
E.Biological clocks can be adjusted.
F.Other rhythms are based on months, seasons or years.
______.A.But where can you find it？
B.This makes them feel tired.
C.In the summer they fly back to have babies.
D.We are learning more and more about them.
E.Biological clocks can be adjusted.
F.Other rhythms are based on months, seasons or years.
______.A.But where can you find it？
B.This makes them feel tired.
C.In the summer they fly back to have babies.
D.We are learning more and more about them.
E.Biological clocks can be adjusted.
F.Other rhythms are based on months, seasons or years.
______.A.But where can you find it？
B.This makes them feel tired.
C.In the summer they fly back to have babies.
D.We are learning more and more about them.
E.Biological clocks can be adjusted.
F.Other rhythms are based on months, seasons or years.
请帮忙给出每个问题的正确答案和分析，谢谢！
第4题
Some birds will fly away to the south in winter, while _____ will stay with you. A.
Some birds will fly away to the south in winter, while _____ will stay with you.
A. another
B. the others
C. others
D. other ones
第5题
In this park, birds often fly down from trees to eat from visitor’s hands. They are u
A.be fed
B.feed
C.having fed
D.being fed
第6题
填句补文Biological ClockWhen the sun rises on a warm and sunny day, you can see some flo
填句补文
Biological Clock
When the sun rises on a warm and sunny day, you can see some flowers open up. When they close late in the afternoon, other flowers open.
Biological rhythms(生物节律), like the opening and closing of flowers, happen all over nature. But not all of them are daily rhythms. Some, like the beating of our heart, happen every second. （1）Scientists use the term biological clock to describe the timing that controls biological rhythms. （2） In some animals it is probably controlled by the brain. In plants and other living things that have no brain, it must be something else.
The migration of animals happens when a signal is sent out. For example, when days become shorter, birds leave the northern parts of the world and fly south where it is warm. （3）Humans also have biological clocks that control their daily rhythms. When people travel by plane from one continent to another, they often cross many time zones. Their internal clocks don’t seem to work correctly. We call this jet lag(时差). （4）People who work night shifts also have problems with their biological clocks. They may not be as active as people who work during the daytime.
Biological clocks control many rhythms of life. （5） Doctors are looking for new ways to make travelling more comfortable and medical treatment more effective.
A. But where can you find it？
B. This makes them feel tired.
C. In the summer they fly back to have babies.
D. We are learning more and more about them.
E. Biological clocks can be adjusted.
F. Other rhythms are based on months, seasons or years.
第7题
You know that some birds and bugs can fly. But did you know that there’s another anima
l that can do this？ It has wings like a bird. But it doesn’t look like a bird. It’s a bat.Bats have fur mostly all over, but not on their wings. Some bats have black, brown, red, or yellow fur. These live in dark places, like caves. Other bats live in trees. Many of these bats are part white and part another color. Some of them are green.There are more than 900 kinds of bats. The biggest ones are called flying foxes. Their heads look like little brown fox heads. The wings of these bats can be over 5 feet across. But other kinds can be very little. The wings of the smallest bats are only 1/2 foot across.In the day, bats hang by their feet and sleep a lot. At times they clean their fur. Some of the time they care for their babies. Mostly they sleep. But when the sun goes down, they begin to move. At night bats fly around. They try to find food. Bats eat fruit, bugs, plants, fish, and flowers.Some bats use their good hearing to find things in the dark. First they make sounds. The sounds jump off anything around the bats. Then these sounds come back, so the bats can hear just where the thing is. They can fly right to it. That’s how they find things to eat.
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1.According to the passage a bat is ().
A.an animal
B.a plant
C.a bird
D.food
2.From the passage we know that ().
A.there are as many as 900 kinds of bats in the world.
B.Bats with brown and red fur live in trees, while bats with green fur live in caves
C.bats are blind but have good hearing
D.the wings of the biggest bats can be exactly 5 feet across
3.The word “flying fox” in paragraph 3 means ().
A.red foxes flying high
B.the biggest bat
C.a kind of fierce animal recently discovered
D.fox-like animals with big wings
4.According to the passage the way bats find food is ().
A.to fly around it at night
B.to jump off anything around them
C.as the same as that of most other animals
D.to use their good hearing in the dark
5.Which of the following is NOT true according to this passage？()
A.All dark bats live in the dark places.
B.In the day bats sleep a lot and look for foods at night.
C.Bats eat more fish and fruit than they eat bugs.
D.Bats can hang on the wall by their feet.
第8题
During daylight hours, birds __________A. fly aimlesslyB. rely on landmarksC. rely on the
During daylight hours, birds __________
A. fly aimlessly
B. rely on landmarks
C. rely on the sun for guidance
D. are more likely to get lost
第9题
When people want to find out about the weather, they usually go to their radios, TVs, ne
wspapers, or the Internet.However, you can also find many weather signs among wildlife because of their highly developed senses.Drops in air pressure affect small mammals (哺乳动物) and insects in many ways.Try looking in or near the house.Mice are good weather indicators.People who spend a lot of time outdoors have observed that field mice come out of their holes and run around before a storm.
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Deer leave the high ground and come down from the mountains before a storm.If you see this, you can be sure that there will be a storm within two days.When you see large numbers of sea crabs on a sandy beach, it is time to leave.A change in air pressure over the water warns the crabs that a storm is coming.To escape the stormy sea pounding the shore, they leave the water and seek shelter on land.
Birds are especially good weather indicators because they also show the effect of a pressure drop in many ways.For example, some birds become easily annoyed and will fight over a piece of bread.Other birds sing just before a storm.It seems they know they won't get another chance for an hour or two.Birds also seek shelter before a storm.You will sometimes see birds resting in trees or staying closely together on a wire near a building.This is a good storm signal.
Seabirds sit out a storm on land.Anytime you see seagulls sitting on the ground in large groups, reluctant to fly, it is not a very good day to go sailing.It is unusual to see large groups of birds flying overhead in the summertime.Watch for other weather signs if you see this.You should also stay alert if you see migrating birds flying in the wrong direction.These birds may be flying ahead of a storm.And if you can't see a bird anywhere, look out! They may have flown to a different place because a violent storm is coming in their direction.
1.What's the main idea of the passage？
A.How to pay close attention to important clues in nature.
B.How to become prepared for any kind of weather.
C.How to predict weather changes by wildlife.
D.What to do when we see the weather signs.
2.When a storm is surely coming in two days, ________.
A.some birds become easily annoyed and fight with each other
B.deer leave the high ground and come down from the mountains
C.large number of sea crabs move on a sandy beach
D.field mice come out of their holes and run around
3.What wildlife indicates particularly well that a storm is coming？
A.Seagulls.
B.Sea crabs.
C.Field mice.
D.Birds.
4.How can you know it's not a good day to go sailing？
A.Migrating birds are flying in the wrong direction.
B.You can't see a bird anywhere.
C.Seagulls are sitting on the ground in large groups.
D.Birds are flying overhead in the summertime.
5.What does the want to say？
A.Wildlife is a good helper to predict the weather.
B.Wildlife is more efficient in predicting the weather.
C.People need to find out about the weather change.
D.Get prepared before a violent storm is coming.
第10题
In the month of September, in Britain, you may see large numbers of birds【C1】______ on roo
fs and telegraph wires. These birds are swallows. They are【C2】______. together because, very soon, they will be flying【C3】______ to much warmer lands, where they will find【C4】______the small flying insects on which they【C5】______. There are no such insects【C6】______in Britain during the winter; it is【C7】______cold for them.
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The swallows settle, fly off, swoop, and【C8】______again. This they do many times, for they are making short【C9】______ flights in order to be fit for the long journey【C10】______them.
【C11】______of these migrating birds leave Britain in the autumn. They fly【C12】______for hundreds of miles【C13】______they reach the warm lands of Africa. But not all the birds get there, for many of them perish in the stormy weather they meet with【C14】______.
In the spring of the following year they【C15】______the long and tiring journey back to Britain. They return to the identical barn or tree in the【C16】______district which they had left the【C17】______autumn. How do these birds find their【C18】______there and back over such vast distances？ Nobody knows exactly【C19】______, but it has something to do【C20】______ winds and air currents.
【C1】
A．being perched
B．perched
C．being perching
D．be perched
