在下面括號內(nèi)列舉的科學(xué)家中，對發(fā)現(xiàn)和完善萬有引力定律有貢獻(xiàn)的是              
                          。（安培、牛頓、焦耳、第谷、卡文迪許、麥克斯韋、開普勒、法拉第）
第谷、開普勒、牛頓、卡文迪許解析:
第谷搜集記錄天文觀測資料、開普勒發(fā)現(xiàn)開普勒三定律、牛頓發(fā)現(xiàn)萬有引力定律、卡文迪許測定萬有引力常數(shù)
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科目：初中英語 來源： 題型：

據(jù)報(bào)道，中學(xué)生的身體素質(zhì)有所下降。這一情況已經(jīng)引起全社會(huì)的關(guān)注和教育部門的高度重視。下圖是某中學(xué)關(guān)于青少年體育鍛煉的宣傳標(biāo)語。
請你根據(jù)下面的要點(diǎn)和要求，用英語寫一篇短文，80詞左右。
要點(diǎn)：1．鍛煉身體的好處：strong，healthy，energetic，
2．鍛煉身體的方式：ballgames，running，
swimming，．．．
3．請你談?wù)剬W(xué)校開展體育鍛煉的看法或建議。(至少寫兩點(diǎn))
要求：1．內(nèi)容必須包括以上要點(diǎn)，可適當(dāng)發(fā)揮。
2．開頭已給出，不計(jì)入總詞數(shù)。
3．語句通順，意思連貫，條理清楚，字跡工整。
4．文中不得出現(xiàn)真實(shí)校名及姓名。
EXERCISE ONE HOLR A DAY，KEEP ILLNESS AWAY!

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科目：初中英語 來源： 題型：

［物理選修3-5模塊］[
（1）下列敘述中符合物理學(xué)史實(shí)的有（    ）
A．托馬斯·楊通過對光的干涉現(xiàn)象的研究，證實(shí)了光具有波動(dòng)性
B．盧瑟福通過“α粒子散射實(shí)驗(yàn)”的研究，發(fā)現(xiàn)了原子核是由質(zhì)子和中子組成的
C．麥克斯韋驗(yàn)證了電磁場理論，提出了光是一種電磁波
D．貝克勒爾發(fā)現(xiàn)了天然放射現(xiàn)象，并提出了原子的核式結(jié)構(gòu)學(xué)說
（2）如圖所示，光滑水平路面上，有一質(zhì)量為m1=5kg的無動(dòng)力小車以勻速率v0=2m/s向前行駛，小車由輕繩與另一質(zhì)量為m2=25kg的車廂連結(jié)，車廂右端有一質(zhì)量為m3=20kg的物體（可視為質(zhì)點(diǎn)），物體與車廂的動(dòng)摩擦因數(shù)為μ=0.2，開始物體靜止在車廂上，繩子是松馳的．求：

①當(dāng)小車、車廂、物體以共同速度運(yùn)動(dòng)時(shí)，物體相對車廂的位移（設(shè)物體不會(huì)從車廂上滑下）；
②從繩拉緊到小車、車廂、物體具有共同速度所需時(shí)間．（取g=10m/s2）

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科目：初中英語 來源： 題型：閱讀理解

Once, a circle lost a piece of its own. The circle wanted to be whole, so it went around looking for its missing piece. But it was incomplete, so it could only roll very slowly. It enjoyed the flowers and the sunshine along the way. It talked with worms. It found lots of different pieces, but none of them fit. So it left them all by the side of the road and kept on looking for the missing piece.
Then one day the circle found a piece that fit perfectly. The circle put the missing piece into itself. It could be whole with nothing missing. It was so happy and began to roll. Now that it was a perfect circle, it could roll very fast, too fast to see flowers or talk to worms. It realized how different the world was when it rolled so quickly. It felt so sad that it stopped, left its found piece by the side of the road and rolled away slowly.
Sometimes we are perfect when we lose something. A man who has everything is a poor man in some ways. He will never have hopes, dreams or something better. He will never know someone loves him or someone is giving him something he has always wanted or never had.
We couldn’t be perfect, but we must be brave enough to love, strong enough to forgive, kind enough to share happiness with others and clever enough to know there is enough love around us and then we can always live a wonderful time in our lives.
【小題1】
The circle rolled very slowly because it        .
A．spent much time talking to wormsB．wanted to enjoy the sunshine
C．was looking for its missing piece D．lost a piece of its own
【小題2】
Why did the circle stop when it rolled quickly? Because it        .
A．wanted to enjoy the world B．found a different world
C．wanted to look for another missing pieceD．thought the world changed so quickly
【小題3】
The story mainly tells us that        .
A．nobody loves us if we give nothing
B．a(chǎn) man who has everything is the happiest
C．losing something may not be a bad thing sometimes
D．we are not whole when we lose something

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科目：初中英語 來源： 題型：

-- Please bring little Tom next time you come to Anhui.
--______, thank you.
A．I willB．I hope soC．That's rightD．My pleasure

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科目：初中英語 來源： 題型：

—Could you tell me_________?
—By underground.
A．how did you come here
B．how you came here
C．when did you come here
D．when you came here

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科目：初中英語 來源： 題型：

The old lady is        seriously ill        we can’t tell her about the death of his son.
A．very; thatB．too; toC．so; thatD．such; that

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科目：初中英語 來源： 題型：

最近老師組織全班同學(xué)在英語課上開展有關(guān)“做家務(wù)活”的討論。假如你是吳軍（Wu Jun），以下是你所在小組的討論表，請你根據(jù)這一記錄表，用英語向全班同學(xué)匯報(bào)討論結(jié)果。
Name
Chores
Wu Jun
Clean up rooms
Jia Mei
Help Mun cook dinner
Wang Ping
Do the laundry
Li Lin
 Do the dishes

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科目：初中英語 來源： 題型：

— David promised to come round to have supper with us today.
— But he ____. I’ve been alone for half an hour.
A．won’tB．hadn’tC．hasn’tD．doesn’t

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