Have you ever wondered why birds sing? Maybe you thought that they were just happy. After all, you probably sing 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 animal, considers 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 frighten 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 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.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 |
What does the underlined word “territory” mean?
| A．An area which a bird considers to be its own. |
| B．An area for which birds fight against each other. |
| C．A place where a bird may shout at the top of its voice. |
| D．A place where families of other species are not welcome. |
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 they want to express their happiness. |
| D．Because their singing helps frighten outsiders away. |
How does the writer explain birds’ singing?
| A．By telling a bird’s story. |
| B．By describing birds’ daily life. |
| C．By reporting experiment results. |
| D．By comparing birds with human beings. |
Lucy and her classmates are discussing about creating a homepage for their class.
Lucy: What should we put on our class homepage?
Jane: I think our class homepage should have daily or weekly news of class activities.
Mathew: What kind of class activities?
Jane: Something like spring outings, class meetings, a school singing competition, etc.
Mathew: We will go for a spring outing next week, won’t we? I can write something about it.
Lucy: Great! What else should our class homepage have?
Mathew: Um… How about photos of students’ artwork, presentations, and outdoor activities?
Lucy: Good idea! But who will take the photos?
Mathew: As I am a fan of photography, I can take the photos.
Jane: I’ve got an idea. As parents always want to know what assignments their kids do in
and after class, we can also post our weekly agenda(计划表), including in-class assignments and homework assignments, on the homepage.
Lucy: And I think I can create a “reading corner” on the class homepage, too. As I am
a bookworm, I can recommend good books to our classmates.
Jane: Great! Let’s get down to work! _____ is interested in taking photos.
| A．Jane | B．Lucy | C．Mathew | D．No one |
_____ can recommend good books to the classmates.
| A．Lucy | B．Mathew |
| C．Jane | D．No one |
– Could you tell me ________?
– It’s twenty minutes by underground.
| A．how can I get to your school |
| B．how much it costs to get to your school |
| C．how far it is from your home to your school |
| D．how long does it take me to get to your school |
Many trees and flowers ________ in our school last year and they made our school a beautiful garden.
| A．have planted | B．are planted |
| C．were planted | D．will be planted |
– Jim，you look sleepy. What’s wrong？
– I ________ late to write a report last night.
| A．ate up | B．gave up |
| C．stayed up | D．took up |
– Chinese government announces that we will do what we can ________ our China Dream.
– That means we Chinese should work harder from now on.
| A．realize | B．realizing |
| C．realized | D．to realize |
Wechat really makes ________ easier for people to keep in touch with each other.
| A．that | B．it | C．this | D．one |
– I left my keys in the room yesterday. I had to get in ________ the window.
– I’m afraid it was dangerous to do so.
| A．in | B．through | C．over | D．to |
– We have done a lot to make our city cleaner, but it’s still not enough.
– So we should do ________ to improve it.
| A．less | B．higher | C．later | D．more |
A terrible ________ hit the village. Lots of houses were washed away.
| A．flood | B．typhoon |
| C．snowstorm | D．Earthquake |
– Who’s that girl, please?
– You mean ________ one with long brown hair? That’s Jack’s daughter.
| A．a | B．an | C．the | D．不填 |
— It is raining heavily! Will the rain last long?
— _______. The weather report says it will be sunny tomorrow.
| A．I don’t think so | B．It doesn’t matter |
| C．I agree | D．Yes, of course |
Mr Green felt surprised and wondered _______.
| A．when did she come back home |
| B．who did the cleaning this morning |
| C．how could I get to the post office |
| D．why they finish the work so early |
— ______ big lanterns! I like them very much!
— Yes. They sell well at the Lantern Festival.
| A．How | B．What | C．What a | D．What an |
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