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A.該物質(zhì)一定是二氧化碳 |
B.反應(yīng)后溶質(zhì)的質(zhì)量一定減少 |
C.反應(yīng)前后溶劑的質(zhì)量保持不變 |
D.反應(yīng)后溶液中溶質(zhì)的質(zhì)量分?jǐn)?shù)一定減小 |
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A.extended family | B.nuclear family | C.DINK family | D.celibatarianger |
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A.a(chǎn)dults, the USA | B.a(chǎn)dults; England |
C.teenagers: the USA | D.teenagers: England |
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A.256 ; 8 | B.256; 80 | C.261 ; 8 | D.261; 80 |
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A.to run to school every day | B.to play sports every day |
C.not to throw away lunch bags | D.not to forget to take cars |
A.a(chǎn)t school | B.in clubs | C.a(chǎn)t home | D.in shops |
A.join in clubs | B.help teachers |
C.make less pollution | D.clean schools |
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The first stage | The second stage | The third stage | Future plans |
Time: October 15, 2003 Spaceship:ShenzhouⅤ Main events: Chinese astronaunt Yang Liwei was sent up into space. He went around the earth 14 times in his one_day flight. China became the third country to succeed in manned space flight. | Time: October 12, 2005 Spaceship: Shenzhou Ⅵ Main events: Chinese astronauts Fei Junlong and Nie Haisheng were both sent up into space.On October 17, the two Chinese space heroes safely returned to the earth. | Time: September 25, 2008 Spaceship: Shenzhou VII Main events: Chinese astronauts Zhai Zhigang, Liu Boming and Jing Haipeng were all sent up into space. China became the third country to succeed in space walk. On Setember 27, the three Chinese space heroes safely returned to the earth. | 1. China will send up Tiangong I and Shenzhou VII, IX & X between 2010 and 2012 2. China will make a manned moon landing at a proper(適當(dāng)?shù)? time around 2017. 2. China plans to set up a permanent (永久的) space lab, and build its engineering system in 2020. |
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The Importance of Trees |
The First Important Way: 【小題1】____________________ _________________________ | The Second Important Way: To give man shade | The Third Important Way: 【小題2】______________________ _________________________ |
Without trees it’s difficult for man and many animals to live on the earth. | On a hot summer, people 【小題3】________________ _______________________ are eager to have a rest under the shade. | Man has not realized this. Because of 【小題4】____________ __________________________ He finds that he has lost the best friends he had |
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