Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims（声称）as its own. Only he and his family are welcome there. No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting（筑巢）season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
1.Some scientists believe that most of the time birds’ singing is actually ______.
A. an expression of happiness B. an expression of anger
C. a way of greeting D. a way of warning
2.How does the writer explain birds’ singing?
A. By comparing birds with human beings.
B. By telling a bird’s story.
C. By reporting experiment results.
D. By describing birds’ daily life.
3.What is a bird’s “territory”?
A. An area for which birds fight against each other.
B. A place where a bird may shout at the top of its voice.
C. An area which a bird considers to be its own.
D. A place where families of other species are not accepted.
4.Why do birds keep on singing at nesting season?
A. Because they want to find outsiders around.
B. Because their singing helps frighten outsiders away.
C. Because they want to invite more friends.
D. Because their singing helps get rid of their fears.
高二英语阅读理解中等难度题
Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims as its own. Only he and his family are welcome there. No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting（筑巢）season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
1.Some scientists believe that most of the time bird’s singing is actually________.
A. an expression of happiness B. a way of warning
C. an expression of anger D. a way of greeting
2.What does the underlined word “territory” mean?
A. A place where families of other species are not accepted
B. A place where a bird may shout at the top of its voice
C. An area for which birds fight against each other
D. An area which a bird considers to be its own
3.Why do birds keep on singing at nesting season?
A. Because they want to invite more friends
B. Because their singing helps frighten outsiders away
C. Because they want to find outsiders around
D. Because their singing helps get rid of their fears
4.How does the writer explain bird’s singing?
A. By comparing birds with human beings
B. By reporting experiment results
C. By describing birds daily life
D. By telling a birds story
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims（声称）as its own. Only he and his family are welcome there. No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting（筑巢）season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
1.Some scientists believe that most of the time birds’ singing is actually ______.
A. an expression of happiness B. an expression of anger
C. a way of greeting D. a way of warning
2.How does the writer explain birds’ singing?
A. By comparing birds with human beings.
B. By telling a bird’s story.
C. By reporting experiment results.
D. By describing birds’ daily life.
3.What is a bird’s “territory”?
A. An area for which birds fight against each other.
B. A place where a bird may shout at the top of its voice.
C. An area which a bird considers to be its own.
D. A place where families of other species are not accepted.
4.Why do birds keep on singing at nesting season?
A. Because they want to find outsiders around.
B. Because their singing helps frighten outsiders away.
C. Because they want to invite more friends.
D. Because their singing helps get rid of their fears.
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims（声称）as its own. Only he and his family are welcome there. No other families of the same species (物种) are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting（筑巢）season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
You can see that birds have a language all their own. Most of it has to do with attracting mates and setting up territories.
1.Some scientists believe that most of the time birds’ singing is actually __________.
A. an expression of happiness B. a way of greeting
C. an expression of anger D. a way of warning
2.What is a bird’s “territory”?
A. A place where families of other species are not accepted.
B. A place where a bird may shout at the top of its voice.
C. An area which a bird considers to be its own.
D. An area for which birds fight against each other.
3.Why do birds keep on singing at nesting season?
A. Because they want to invite more friends.
B. Because their singing helps frighten outsiders away.
C. Because they want to find outsiders around.
D. Because their singing helps get rid of their fears.
4.How does the writer explain birds’ singing?
A. By comparing birds with human beings.
B. By reporting experiment results.
C. By describing birds’ daily life.
D. By telling a bird’s story.
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy．After all, you probably sing or whistle when you are happy．
Some scientists believe that birds do sing some of the time just because they are happy．However, they sing most of the time for a very different reason．Their singing is actually a warning to other birds to stay out of their territory．
Do you know what a "territory" is? A territory is an area that an animal, usually the male, claims as its own ．Only he and his family are welcome there ．No other families of the same species are welcome．Your yard and house are your territory where only your family and friends are welcome．If a stranger should enter your territory and threaten you, you might shout．Probably this would be enough to frighten him away．
If so, you have actually scared the stranger away without having to fight him．A bird does the same thing．But he expects an outsider almost any time, especially at nesting （筑巢） season．So he's screaming （高声尖叫） all the time, whether he can see an outsider or not．This screaming is what we call a bird's song, and it is usually enough to keep an outsider away．
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs．You can see that birds have a language of their own．Most of it has something to do with attracting mates and setting up territories．
1.Some scientists believe that most of the time birds' singing is actually
A．an expression of happiness
B．a way of warning
C．an expression of anger
D．a language of their own
2.What is a bird's "territory"?
A．A place where a bird may shout at the top of its voice．
B．A place where other bird families are not accepted．
C．An area for which birds fight against each other．
D．An area which a bird considers to be its own
3.Why do birds keep on singing at nesting season?
A．Because their singing helps frighten outsiders away．
B．Because their singing helps get rid of their fears．
C．Because they want to find outsiders around．
D．Because they want to invite more bird friends．
4.How does the writer explain birds' singing?
A．By comparing birds with human beings． B．By reporting experimental results．
C．By describing birds'daily life． D．By telling a bird's story．
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy. However, they sing most of the time for a very different reason. Their singing is actually a warning to other birds to stay out of their territory.
Do you know what a “territory” is? A territory is an area that an animal, usually the male, claims（声称）as its own. Only he and his family are welcome there. No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout. Probably this would be enough to frighten him away.
If so, you have actually scared the stranger away without having to fight him. A bird does the same thing. But he expects an outsider almost any time, especially at nesting（筑巢）season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird’s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
You can see that birds have a language of their own. Most of it has to do with attracting mates and setting up territories.
1.Some scientists believe that most of the time birds’ singing is actually ______.
A. an expression of happiness B. an expression of anger
C. a way of greeting D. a way of warning
2.How does the writer explain birds’ singing?
A. By comparing birds with human beings.
B. By telling a bird’s story.
C. By reporting experiment results.
D. By describing birds’ daily life.
3.What is a bird’s “territory”?
A. An area for which birds fight against each other.
B. A place where a bird may shout at the top of its voice.
C. An area which a bird considers to be its own.
D. A place where families of other species are not accepted.
4.Why do birds keep on singing at nesting season?
A. Because they want to find outsiders around.
B. Because their singing helps frighten outsiders away.
C. Because they want to invite more friends.
D. Because their singing helps get rid of their fears.
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy．After all，you probably sing or whistle when you are happy．
Some scientists believe that birds do sing some of the time just because they are happy．However，they sing most of the time for a very different reason．Their singing is actually a warning to other birds to stay out of their territory
Do you know what a “territory” is? A territory is an area that an animal，usually the male，claims(声称)as its own．Only he and his family are welcome there．No other families 0f the same species(物种)are welcome．Your yard and house are your territory where only your family and friends are welcome．If a stranger should enter your territory and threaten you，you might shout．Probably this would be enough to frighten him away．
If so，you have actually scared the stranger away without having to fight him．A bird does the same thing。But he expects an outsider almost any time，especially at nesting(筑巢) season．So he is screaming all the time，whether he can see an outsider or not This screaming is what we call a bird’s song，and it is usually enough to keep an outsider away．
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs．
You can see that birds have a language all their own．Most of it has to do with attracting mates and setting up territories．
1.Some scientists believe that most of the time birds’ singing is actually．
A．an expression of happiness
B．a way of greeting
C．an expression of anger
D．a way of warning
2.What is a bird’s “territory”?
A．A place where families of other species are not accepted．
B．An area which a bird considers to be its own
C．an area for which birds fight against each other．
D．A place where a bird may shout at the top of its Voice．
3.Why do birds keep on singing at nesting season?
A．Because they want to invite more friends
B．Because their singing helps get rid of their fears．
C．Because they want to find outsiders around．
D．Because their singing helps frighten outsiders away．
高二英语阅读理解中等难度题查看答案及解析
Have you ever wondered why birds sing? Maybe you thought that they were just happy．After all，you probably sing or whistle when you are happy．
Some scientists believe that birds do sing some of the time just because they are happy．However，they sing most of the time for a very different reason．Their singing is actually a warning to other birds to stay out of their territory
Do you know what a“territory”is? A territory is an area that an animal，usually the male，claims(声称)as its own．Only he and his family are welcome there．No other families of the same species(物种)are welcome．Your yard and house are your territory where only your family and friends are welcome．If a stranger should enter your territory and threaten you，you might shout．Probably this would be enough to frighten him away．
If so，you have actually scared the stranger away without having to fight him．A bird does the same thing．But he expects an outsider almost any time，especially at nesting(筑巢) season．So he is screaming all the time，whether he can see an outsider or not . This screaming is what we call a bird’s song，and it is usually enough to keep an outsider away．
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs．
You can see that birds have a language all their own．Most of it has something to do with attracting mates and setting up territories．
1.Some scientists believe that most of the time birds’singing is actually ．
A．a way of warning B．an expression of happiness
C．an expression of anger D．a way of greeting
2.What is a bird’s“territory”?
A．A place where families of other species are not accepted．
B．An area which a bird considers to be its own．
C．An area for which birds fight against each other．
D．A place where a bird may shout at the top of its Voice．
3.Why do birds keep on singing at nesting season?
A．Because they want to invite more friends
B．Because they want to find outsiders around．
C．Because their singing helps frighten outsiders away．
D．Because their singing helps get rid of their fears．
4.How does the writer explain birds’ singing?
A．By comparing birds with human beings．
B．By reporting experiment results．
C．By describing birds’ daily fife．
D．By telling a bird's story．
高二英语阅读理解中等难度题查看答案及解析
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Have you ever wondered why birds sing? 1 After all, you probably sing or whistle when you are happy.
Some scientists believe that birds do sing some of the time just because they are happy.
2 Their singing is actually a warning to other birds to stay out of their territory. Do you know what a "territory" is? A territory is an area that an animal, usually the male, claims(声称) as its won. Only he and his family are welcome there. No other families of the same species are welcome. Your yard and house are your territory where only your family and friends are welcome. If a stranger should enter your territory and threaten you, you might shout.3 If so, you have actually scared the stranger away without having to fight him. 4 But he expects an outsider almost all the time, especially at nesting(筑巢) season. So he is screaming all the time, whether he can see an outsider or not. This screaming is what we call a bird' s song, and it is usually enough to keep an outsider away.
Birds sing loudest in the spring when they are trying to attract a mate and warn others not to enter the territory of theirs.
5 Most of it has to do with attracting males and setting up territories.
A. A bird does the same thing.
B. Maybe you thought that they were just happy.
C. Shouting loudly is just like a bird's screaming.
D. You can see that birds have a language all their own.
E. Probably this would be enough to frighten him away.
F. However they sing most of the time for a very different reason.
G. So, just like human beings, birds sing for almost the same reasons.
高二英语简单题查看答案及解析
If you live in the country or have ever visited there, ____ are that you have heard birds singing to welcome the new day.
A.thinks B.facts C.chances D.possibilities
高二英语单项填空困难题查看答案及解析
Have you ever had a wonderful idea and thought it would make a great invention，but didn't know what to do next？1.-
They will help you make your dreams come true and become a famous inventor．
The first thing that you should do is do some research on the Internet to see if anyone else has invented it．If not ，you should search through the US Patent （专利） information to see if a patent was ever created for your type of invention．2. .The easiest thing to do is working with an agency（代理机构） that can help you to make your dreams a reality．
It can help you present your ideas and get your product to the right companies．One agency that is very reputable （声誉好的） is"Lambert in Minnesota" 3. .
If they think your product is marketable （有销路的），they will help you to get it to the right company． Call the agency and make an appointment．You will want to bring in a model of your invention and a complete description of your ideas．4.
Then when you meet with them,you can present it and they will tell you how marketable it is．If they decide to help you,they will work to present it to different companies and help you to go to the next step． Once your invention has been sold to a large company，get ready to get the benefits of becoming the next great inventor． 5. .But the benefits are worth the wait．
A．It may take a year or two．
B．If not，go to the next step．
C．You will find something new on the Internet．
D．You will be the next inventor．
E．Write down exactly about your invention．
F．Here are some steps that you can take．
G．They offer free advice for good ideas．
高二英语七选五简单题查看答案及解析