下載本文檔
版權(quán)說明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請進(jìn)行舉報(bào)或認(rèn)領(lǐng)
文檔簡介
1、姓名:_ 班級:_ 學(xué)號(hào):_-密-封 -線- *英語相同項(xiàng)單選集考試卷模擬考試題考試時(shí)間:120分鐘 考試總分:100分題號(hào)一二三四五總分分?jǐn)?shù)遵守考場紀(jì)律,維護(hù)知識(shí)尊嚴(yán),杜絕違紀(jì)行為,確??荚嚱Y(jié)果公正。1、how many things can you see in the night sky a lot! on a clear night you might see the moon, some planets, and thousands of sparkling stars. you can see even more with a telescope.but scientists be
2、lieve there are some things in the sky that we will never see. we wont see them with the biggest telescope in the world, on the clearest night of the year. thats because theyre invisible. theyre themysteriousdead stars called black holes.as a stars gases burn, they give off light and heat. but when
3、the gas runs out, the star stops burning and begins to die.as the star cools, the outer layers of the star pull in toward the center. the star squashes (擠壓) into a smaller and smaller ball. if the star was very small, the star ends up as a cold, dark ball called a black dwarf. if the star was very b
4、ig, it keeps squashing inward until its packed together tighter than anything in the universe.imagine if the earth were crushed until it was the size of a tiny marble. thats how tightly this dead star, a black hole, is packed. what pulls the star in toward its center with such power its the same for
5、ce that pulls you down when you jumpthe force called gravity. a black hole is so tightly packed that its gravity sucks in everythingeven light. the light from a black hole can never come back to your eyes. thats why you see nothing but blackness.so remember: scattered in the silent darkness are blac
6、k holesthe great mystery of space.according to the article, what causes a star to die( )a.as its gases run out, it cools down.b.it collides with other stars.c.it can only live for about a million years.d.as it gets hotter and hotter, it explodes.2、how many things can you see in the night sky a lot!
7、on a clear night you might see the moon, some planets, and thousands of sparkling stars. you can see even more with a telescope.but scientists believe there are some things in the sky that we will never see. we wont see them with the biggest telescope in the world, on the clearest night of the year.
8、 thats because theyre invisible. theyre themysteriousdead stars called black holes.as a stars gases burn, they give off light and heat. but when the gas runs out, the star stops burning and begins to die.as the star cools, the outer layers of the star pull in toward the center. the star squashes (擠壓
9、) into a smaller and smaller ball. if the star was very small, the star ends up as a cold, dark ball called a black dwarf. if the star was very big, it keeps squashing inward until its packed together tighter than anything in the universe.imagine if the earth were crushed until it was the size of a
10、tiny marble. thats how tightly this dead star, a black hole, is packed. what pulls the star in toward its center with such power its the same force that pulls you down when you jumpthe force called gravity. a black hole is so tightly packed that its gravity sucks in everythingeven light. the light f
11、rom a black hole can never come back to your eyes. thats why you see nothing but blackness.so remember: scattered in the silent darkness are black holesthe great mystery of space.which word has the same meaning with the word “mysterious”( )a.ordinaryb.brightc.stranged.common3、how many things can you
12、 see in the night sky a lot! on a clear night you might see the moon, some planets, and thousands of sparkling stars. you can see even more with a telescope.but scientists believe there are some things in the sky that we will never see. we wont see them with the biggest telescope in the world, on th
13、e clearest night of the year. thats because theyre invisible. theyre themysteriousdead stars called black holes.as a stars gases burn, they give off light and heat. but when the gas runs out, the star stops burning and begins to die.as the star cools, the outer layers of the star pull in toward the
14、center. the star squashes (擠壓) into a smaller and smaller ball. if the star was very small, the star ends up as a cold, dark ball called a black dwarf. if the star was very big, it keeps squashing inward until its packed together tighter than anything in the universe.imagine if the earth were crushe
15、d until it was the size of a tiny marble. thats how tightly this dead star, a black hole, is packed. what pulls the star in toward its center with such power its the same force that pulls you down when you jumpthe force called gravity. a black hole is so tightly packed that its gravity sucks in ever
16、ythingeven light. the light from a black hole can never come back to your eyes. thats why you see nothing but blackness.so remember: scattered in the silent darkness are black holesthe great mystery of space.what happens after a star dies( )a.it becomes invisible.b.it falls to earth.c.it burns up al
17、l of its gases.d.it becomes brighter and easier to see.4、how many things can you see in the night sky a lot! on a clear night you might see the moon, some planets, and thousands of sparkling stars. you can see even more with a telescope.but scientists believe there are some things in the sky that we
18、 will never see. we wont see them with the biggest telescope in the world, on the clearest night of the year. thats because theyre invisible. theyre themysteriousdead stars called black holes.as a stars gases burn, they give off light and heat. but when the gas runs out, the star stops burning and b
19、egins to die.as the star cools, the outer layers of the star pull in toward the center. the star squashes (擠壓) into a smaller and smaller ball. if the star was very small, the star ends up as a cold, dark ball called a black dwarf. if the star was very big, it keeps squashing inward until its packed together tighter than anything in the universe.imagine if the earth were crushed until it was the size of a tiny marble. thats how tightly this dead star, a black hole, is packed. what pulls the star in toward its center with such power its the same force tha
溫馨提示
- 1. 本站所有資源如無特殊說明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒有圖紙預(yù)覽就沒有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫網(wǎng)僅提供信息存儲(chǔ)空間,僅對用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對自己和他人造成任何形式的傷害或損失。
最新文檔
- 山東聊城大學(xué)招聘考試試卷及答案
- 瀘州市龍馬潭區(qū)事業(yè)單位招聘工作人員考試試卷及答案
- 元宵節(jié)的日記集合5篇
- 元宵節(jié)日記模板四篇
- 軍訓(xùn)心得體會(huì)
- 賽迪前瞻2024年第26期(總866期):人工智能中小企業(yè)發(fā)展成效顯著但仍面臨三大隱憂 - 水印版
- 2020年山東濱州中考滿分作文《青春是暖陽》
- 2020年江蘇宿遷中考滿分作文《日子普通也精彩》
- 漁業(yè)機(jī)械智能制造的數(shù)據(jù)分析與應(yīng)用考核試卷
- 錫冶煉行業(yè)綠色發(fā)展模式與案例考核試卷
- 咨詢費(fèi)協(xié)議樣本心理健康
- 新課標(biāo)背景下小學(xué)勞動(dòng)教育中滲透德育的途徑
- 普通中小學(xué)校建設(shè)標(biāo)準(zhǔn)
- 2022年版初中物理課程標(biāo)準(zhǔn)解讀-課件
- 電網(wǎng)運(yùn)行安全校核技術(shù)規(guī)范
- 汽車坡道玻璃雨棚施工方案
- 人教鄂教版五年級上冊科學(xué)全冊教案
- 24春國家開放大學(xué)《兒童心理學(xué)》形考任務(wù)1-5參考答案
- 質(zhì)量管理監(jiān)督檢查記錄表
- 福建省福州市2023-2024學(xué)年七年級上學(xué)期期中數(shù)學(xué)試題
- 污水處理廠污泥處理處置污泥運(yùn)輸處置方案
評論
0/150
提交評論