相关试卷

Not really. Take off the skin (表皮). The inside is white. Rub (摩擦) the inside of a blueberry on a white piece of paper. It is reddish-purple. And if you rub the outside of a blueberry, it gets almost black, But the moment you pick one, it does look blue. Why?

①The first way is through "structural color" (结构色). ②The blueberry makes "structural color" in its own way. ③When the blueberry is full grown, it is black. ④But a thin layer of wax (蜡层), on the outside of the blueberry, gives it a blue look,

The second is through plant pigments (色素). The pigments on the blueberry skin take in green and yellow light and reflect (反射) blue light. That's why blueberries look blue in our eyes. In fact, there aren't any "true blue" in the plants. We can also see the similar features (特点) on the green leaves.

The blueberry's special color way is cool. It shows nature's magic. More secrets in our nature are waiting for us to discover! Now your bowl of blueberries suddenly looks a lot more interesting!

When I am in Grade 4. our school has a Chinese poem (诗歌) match. That night, lots of ideas come to my mind. By the next morning, I make a great poem about the space (太空) and win the match. After that, I become really excited and start to read a lot of poetry books. I learn new words and ways to write.

Now, I enjoy writing. I write about a sad father who finds peace in the nature. I also write a paper about illness and a girl in a wheelchair (轮椅) — that's me. At night, I type on my computer. I put all my feelings into my writing. I use words to show what I can't do like dancing. Writing is now my special way to share my thoughts: and my life.

I may not dance across the stage like dancers, but I can dance across the page.

Dear Teng Fei,

After reading your letter, I know you often feel bored at home. Now I'd like to share a story of mine. My family1 the whole week for a picnic. But on the nice and2 Saturday morning, my mom and dad have colds.3 we can't go and have to stay at home. At breakfast, Mom says sorry to us. I just say it is okay, but I am a little4 inside.

As I sit there feeling down, my little cat Charlie jumps5 top of my bookcase and the other cat Cow looks up with his sweet6.

"Hmm," I say. "Are you two,7 to tell me something?"

Then, Charlie pushes down my8 fairy-tale book from the bookcase as if he truly9 me.

"OK," I laugh. "Come to my bed."

We begin to read a story. It is about a boy who10 a sea turtle (乌龟). As I11 the story out loud, I start to think I am that boy. The turtle named Greenaway says, to thank me, it will take me to a magic place12 the sea. I get on13 shell (壳) and start our journey. At first, there are only small fish and sea plants. But as we go deeper, it becomes really14.

"Is this huge and beautiful place your home?" I shout loudly.

"Yes, "says Greenaway. "Look, here comes the Queen now!"

Then I15 the shell and land in a bright place. So, you see, even at home, I have an interesting and nice day.

A. then I make a wish and blow out the candles.

B. It's fun to look at the marks later.

C. At night, I have a party with my friends to celebrate.

D. because long noodles are a symbol of long life.

E. I also want to do something different.

—We plan to ________ an English story.

—You can ________ them online.

—Good idea！We can ________ some insects and plants.

—Thanks! You, too.

— ________. I'd like to watch the robot show there.

—____？But I like apples. 

—Anything is ____ . 

—Yes. What's more, it was built（建造）on our own in Shanghai. （同义替换）____

—Yes, I'll show you. 

—One spoon. After that, we should cook it ____ another five minutes.