When you look up into the sky at night, have you ever felt that your eyes are playing tricks on (捉弄) you? It seems that the stars are moving all the time.

Actually, there is nothing wrong with your eyes. This twinkling effect is called scintillation (交光). Scintillation happens because of air movements in the earth’s atmosphere (大氣). Light is “bent (彎曲的)” when it travels through different parts of the earth’s atmosphere. As the air in the earth’s atmosphere is moving all the time, the light from the stars looks as if it is moving too.

The same thing also happens to things on the ground. On a very hot and shiny day, if you look at the road, the image in the distance is not clear and things move slightly. You can also see the same effect if you drop a rock into water. The rock appears a little unclear under the moving water.

This twinkling effect causes a lot of problems for astronomers (天文學(xué)家) since they cannot observe the stars clearly. A telescope (望遠(yuǎn)鏡) was sent into space so that the air movements in the atmosphere could be avoided (避免). It took a long time to build the space telescope but finally in 1990, a huge space telescope called the Hubble Space Telescope was successfully sent into space. Since then, astronomers have many important observations that have helped people understand space better.

根據(jù)短文內(nèi)容，選擇最佳選項(xiàng)。 （10分）

1.What happens to the light from the stars we see when the air in the earth’s atmosphere is moving?

A．It looks even brighter.

B．It looks as if it is bent.

C．It looks as if it is moving.

D．It looks like drops of rain.

2.Scintillation also happens on 　　　　 according to the passage.

A．rainy days                             B．shiny days

C．cloudy days                            D．windy days

3.What can you see when you drop a rock into the water?

A．The rock gets broken.

B．The rock becomes unclear.

C．The water becomes much polluted.

D．The water does not move anymore.

4.The underlined word “observe” means “　　　　”.

A．watch            B．listen             C．draw             D．explain

5.Why is scintillation a problem for astronomers?

A．The stars never stay still.

B．It makes the stars too dark to see.

C．It makes astronomers feel too hot to work.

D．Astronomers cannot observe the stars clearly.

Hello, I’m Vladislav. For my summer holidays, I usually stay in a country house near Moscow.

Last summer, my dad’s brother gave me a present — a blue bike. At that time I couldn’t ride it very well.

One day I got into an accident. But don’t worry, everything was OK, just some “l(fā)ittle” injuries.

That day, I tried to ride my bike and suddenly it began to move very fast. I couldn’t stop the bike. So I fell into a ditch (溝) full of dirty water. When I thought I had had enough bad luck, a girl walked by. She saw the bike and me. I quickly stood up.

“Are you fishing here?” she asked.

“Yes,” I answered. Then I said, “I’m making fish soup for dinner. Would you like to come?” To my surprise, she agreed.

After that we became friends. Now, we often send each other e-mails. She knows that I’m studying in China and she asks me questions about Chinese culture. I tell her my stories of China, and she says she wants to visit China, too. She even plans to study Chinese.

This is how, with the help of my bike, China got one more Russian friend.

根據(jù)短文內(nèi)容，回答下列問(wèn)題。

1.Who sent Vladislav a bike last summer?

2.What happened when Vladislav tried to ride his bike?

3. What did the girl think Vladislav was doing when she saw him by the ditch?

4.What made Vladislav surprised?

5. What does the girl say she wants to do in her e-mail to Vladislav?

根據(jù)句意，用括號(hào)內(nèi)所給單詞的適當(dāng)形式填空。

1.Tom 　　　　(drop) his schoolbag on the bus. He felt worried.

2.My mother is looking forward to 　　　　(meet) you.

3.At first, our foreign English teacher spoke so 　　　　(quick) that no one could follow her.

4.— What’s wrong with Maria?

— She fell off the bike and hurt 　　　　(her).

5.— How clean your house is!

— Thank you. It 　　　　(clean) every day.

根據(jù)漢語(yǔ)句子完成英語(yǔ)句子。每空一詞。

1.把你的名字寫(xiě)在這張紙上，你就能拿到一本雜志。

　　　　　　 your name on the paper and you 　　　　　　 a magazine.

2.“最美女教師”張老師這些天收到許多花和信件。

Miss Zhang, 　　　　　　 beautiful teacher, 　　　　　　 many flowers and letters these days.

3.如果我們利用紙的兩面，那更多的錢(qián)能被省下來(lái)。

More money can 　　　　　　 if we 　　　　　　 sides of paper.

4.你應(yīng)該向他們學(xué)習(xí)，而不是反對(duì)他們。

You should 　　　　　　 them 　　　　　　 be against them.

5.中國(guó)人更喜歡用筷子，而不習(xí)慣用刀叉。

Chinese people 　　　　　　 use chopsticks 　　　　　　 a knife and fork.

假如今天你在上學(xué)路上看到了一起交通事故——一個(gè)騎自行車(chē)的人闖紅燈，然后和一輛小汽車(chē)相撞。請(qǐng)根據(jù)下面的提示寫(xiě)一篇80詞左右的英語(yǔ)短文。

提示：

① When and where did the accident happen?

② How did the accident happen?

③What was the result? And what did you learn from the accident?

Money from the __________ / [buk] / sales will be donated.

A．bike              B．book             C．back             D．black

Alice is wearing a __________ / waIt / skirt today.

A．wait              B．what             C．wet              D．white

Turn___________/left/ and you’ll see the post office.

A．letter             B．litter             C．lift               D．left

The relationship ___________/bi'twi:n /Chinese and African people is important.

A．between          B．begin             C．began            D．belong

The driver should drive ____________ /' sl?uli / when  the traffic is heavy.

A．slow             B．slightest           C．slowly            D．silently