阅读下列短文，根据短文内容，从题中所给的A、B、C、D四个选项中，选出最佳答案。
Though oceans cover about 71 percent of the earth’s surface, there’s still a lot we don’t know about them. Only about 20 percent of the seafloor has been mapped, and the remaining 80 percent is still a secret to us. Some scientists even think that 91 percent of sea animals have yet to be discovered.
So why do we know so little about the deep sea? Well, getting to those depths is very difficult and requires high technology that simply didn’t come into being for most of human history. The first navigable submarine（可驾驶的潜水艇）, for example, was built in 1620, and it couldn’t go more than five meters below the surface. In fact, for a long time many scientists didn’t even think that there could be any life at depths greater than 550 meters and didn’t see much need to explore（探索） the deep sea. However, this changed in 1862 when life was discovered as far down as 945 meters below sea level with the help of a digging machine. Ten years later, around 4, 700 species（物种） unknown before from the ocean floor were discovered.
Since then, high technology has been developed to help explore the deep sea, including satellites. But why is deep-sea exploration still so difficult? Well, at greater depths it is freezing（极冷的）, everything is completely dark, and the pressure can be over 1, 000 times greater than that on the surface.
Though we have the difficulties, it’s important that we understand the seas. They help control the earth’s temperature and produce half of the oxygen（O2） in the air. They can also provide us with information about climate change. Our future depends on learning more about our oceans, and it is possible for us to really understand what is ongoing below the surface.
（1）Why are some numbers listed in Paragraph 1?
| A． |
To introduce how important oceans are. |
| B． |
To discuss why sea animals have yet to be found out. |
| C． |
To explain that oceans cover a large area of the earth. |
| D． |
To show that we have only a little understanding of oceans. |
（2）What caused the change of exploration into the deep sea?
| A． |
High technology. |
B． |
Unknown species. |
| C． |
A pleasant environment. |
D． |
Valuable information. |
（3）What does the underlined word “They” in the last paragraph refer to?
| A． |
Sea animals. |
B． |
The seas. |
C． |
The satellites. |
D． |
Many scientists. |
（4）What can we learn from the text?
| A． |
It is difficult to build a navigable submarine. |
B． |
The seas have a strong influence on our future. |
| C． |
The seas have no lives at a depth of 550 meters. |
D． |
It is easier to go into the deep sea than we think. |
（5）What could be the best title of the text?
| A． |
Hidden Treasures in Deep Sea |
B． |
Unlocked Secrets of Deep Sea |
| C． |
Deep-Sea Exploration: Into the Freezing Depths |
D． |
Deep-Sea Exploration: The Past and the Future |
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TikTok，known as Douyin in China，is a mobile app allowing users to create，share and watch short videos. Developed by：ByteDance Users：13+ |
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Joe Thomas It seems very enjoyable.However，it's difficult to stop once you start watching its videos.It's not a good idea to spend too much time on it. |
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Alice Brown I like the app because it allows me to share my daily life and make new friends.What's more，I have won more popularity for the videos I created.Now I have more than 10 million fans. |
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Adam Young There is no need for us to use this app.My friend Tom Smith spends most of his spare time on TikTok.I think he should spend time on more meaningful things，such as exercising or reading. |
（1）TikTok is suitable for users aged .
A.7
B.20
C.12
D.10
（2）Joe Thomas thinks that you may while watching TikTok.
A.spend too much time
B.get bored easily
C.waste too much money
D.learn some harmful information
（3）TikTok has made popular for his （her） videos.
A.Joe Thomas
B.Tom Smith
C.Adam Young
D.Alice Brown
A mind map is basically a tool that connects information around a central subject.It can help you make a knowledge bank to solve problems.A student recently said， "I thought mind mapping would take a lot of time to do but in fact it saves me time.（1）
How to make a mind map？Now follow these steps for making wonderful mind maps.
（2 ） Why？Because starting in the center lets your brain spread out in all directions and express itself more freely and naturally.
Use a picture for your central idea.Why？Because a picture is worth a thousand words and helps you use your imagination.（3） It helps get your attention and makes you work excitedly!
Connect your main branches （分支） to the central picture and connect your second﹣and﹣third﹣level branches to the first and second levels，etc.Why？Because your brain works by connection（4） If you connect the branches，you will understand and remember a lot more easily.
Use one key word every line.Why？Because every single key word can make you learn more clearly and easily.
（5） Why？Because each picture，just like the central picture，is also worth a thousand words.So，if you have 10 pictures in your mind map，they are already worth 10，000 words of notes.
Try to use more colors.Why？Because colors are as exciting to your brain as pictures.Color adds great energy to your creative thinking，and is fun!
根据材料内容，从下面五个选项中选出能填入文中空缺处的最佳选项，使文章意通顺、内容完整。
A.Start in the center of a page.
B.Use pictures as many as possible.
C.A central picture is more interesting.
D.I don't have to read my notes over and over again.
E.It likes to connect two，or three，or four things together.
Every living thing needs to reproduce.Reproducing means creating more members of your group.In order for plants to reproduce，they have to spread their seeds （种子） to other areas.Plants have developed all kinds of ways to do this.
The simplest way is gravity.Many seeds are inside of fruit.When a piece of fruit gets too heavy，it falls from a tree to the ground.Sometimes animals will pick up the fruit and drop it in another area.That helps move the seed even farther away.Apples spread this way.
Other plants use wind to spread their seeds.Dandelions are a good example of this.Dandelion seeds are so light that when wind blows，it carries dandelion seeds to new places.Maple （枫树） seeds also use wind.Their seeds are connected with long，thin leaves that look like wings.When the seed falls from the tree，its "wings" help it fly farther from the tree.
Some animals help plants spread their seeds.The animals eat the seeds.While the seed is in the animal's body，it stays whole.when the seed leaves the animal，it's in a new place.
Ants also help spread seeds.Some seeds have a special smell that attracts ants.The ants bring the seeds back to their home，which of course is underground.They only eat part of the seed.They leave the rest of the seed underground.After that，the seed can start growing.
（1）What does the word "gravity" mean in the second paragraph？
A.The action that makes animals drop seeds.
B.The help that moves seeds even farther away.
C.The need that comes from animals and plants.
D.The force that causes fruit to fall to the ground.
（2）How do maples spread their seeds？
A.They use ants.
B.They use wind.
C.They use smells.
D.They use animals.
（3）What do ants do to help spread seeds？
a.They only eat part of the seed.
b.They help seeds fall from the tree.
c.They carry seeds to the underground home.
d.They pick up the fruit and move it far away.
e.They leave the rest of the seed underground.
A.b，d，e
B.a，b，d
C.a，c，e
D.b，c，d
（4）What is the theme （主题 ） of the text？
A.Nature.
B.Culture.
C.Education.
D.Technology.
（5）What's the best title for the text？
A.How Plants Spread Seeds？
B.Why Animals Pick Up Seeds？
C.How Wind Helps Seeds Spread？
D.Why Seeds Have a Special Trip？
"Oh，boys，don't throw stones at the poor bird，" said an old grey﹣headed man.
"Sir，" said a little one，"she makes such a loud noise that we can't bear her."
"I am afraid the stone will rebound （反弹） and hurt you as long as you live!"
"Rebound!We don't understand you，sir!"
"Well，I will tell you a true story.
"Fifty years ago，I liked throwing stones because I had no other boy to play with and I became very skillful.One day I went to work for an old couple who were very friendly to everybody，even to the birds.And the birds seemed to love the old couple，too.For seven years a bird had come and built her nest （鸟巢） in the same place.She and her mate had just returned on the day I went to work and the old couple welcomed them happily.During the day，I thought I would try my skill upon her.Suddenly the bird flew to a tree near me.I found a nice stone，and I threw it with my best skill.It hit the bird on the head and she dropped dead！
"I was sorry the moment I saw her fall off the tree.But it was too late.All day long her mate flew about，and chirped （发啁啾声） so sadly that he made my heart ache..I said nothing to the old couple but one of their grandchildren told them about it.Though the old couple never said a word to me，I knew that they were very sad.I could never look them in the eye and tell them how sorry I was.They have been dead for many，many years，and so has the poor bird.But don't you see how that stone rebounded，and hit me？For fifty years I have still remembered it though I have never spoken of it before.But if what I have told you will stop you，I will be happy."
The boys at once dropped the stones in their hands and the bird had no more trouble from them.
（1）Why did the boy throw stones at the bird according to what the little boy said？
A.Because they wanted to catch the bird.
B.Because they thought the bird was noisy.
C.Because they wanted to practice their skills.
D.Because they thought throwing stones was fun.
（2）Which word can best describe the old couple？
A.Kind.
B.Strict.
C.Proud.
D.Funny.
（3）The underlined word "They" refers to .
A.the birds
B.the old couple
C.the boys
D.the grandchildren
（4）How did the old man stop the boys from throwing stones at the bird？
A.By driving away the bird.
B.By taking away their stones.
C.By playing jokes on the boys.
D.By telling the boys his own story.
（5）What can we learn from the text？
A.Don't hurt others，or you will hurt yourself.
B.Try to save others and you will feel happier.
C.Keep practicing and you will be very skillful.
D.Don't waste time，or you will achieve nothing.
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Create Your Own Story Competition If you love to write，draw and create stories，here's your chance! Come and join in the Create Your Own Story Competition（13﹣19 September 2021）
All you have to do is to create your own stories. ●The competition is only open to the students in Grand Middle School. ●Please write a story in at least 300 words. ●Pictures are not necessary but stories with creative pictures will get extra （额外的） points. |
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Get an entry form （参赛表格） from www.GrandMiddleSchooL.org/createyourownstory. The closing date：September 20，2021. |
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The best stories will be posted on www.GrandMiddleSchool.org/beststories.Everyone will have the chance to vote （投票） for their favorite stories from 23 to 25 September 2021. |
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Names of winners will also be posted on www.GrandMiddleSchool.org/beststories on September 30，2021. |
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Please call 1800 6221 4422 or visit www.GrandMiddleSchool.org/storycompetition for more information. |
根据材料内容选择最佳答案。
（1）If you win the 5th place，what prizes will you get？
A.1 dictionary and 5 books.
B.1 dictionary and 10 books.
C.1 dictionary and 15 books.
D.1 dictionary and 20 books.
（2）Jimmy is refused to take part in the competition probably because .
A.he creates the story all by himself
B.his story has more than 300 words
C.his story doesn't have any pictures
D.He isn't from Grand Middle School
（3）When can you vote for your favorite stories？
A.On September 13.
B.On September 20.
C.On September 24.
D.On September 30.
（4）What can you find on www.GrandMiddleSchool.org/storycompetition？
A.Best stories.
B.More information.
C.An entry form.
D.Names of winners.
（5）Who is the text written for？
A.Students.
B.Teachers.
C.Parents.
D.Artists.
