Battery-operated slippers are used ______ seeing in the dark.
A. to B. as C. by D. for
科目:初中英語 來源: 題型:
There are two kinds of changes—chemical change and physical change.
In a chemical change, there is always a new substance(物質(zhì)) formed. Breaking up water into hydrogen(氫氣) and oxygen(氧氣) is a chemical change. In each of the chemical change at least one new substance is formed. A change is not a chemical change if it doesn’t form a new substance.
Physical changes are very common, too. There are many examples. You can make a physical change by tearing(撕開)a piece of paper in two, or by cutting a piece of iron with lathe(車床). Here paper is still paper, and the iron is still iron.
Another way of making physical change is dissolving(融化) something in water. When you dissolve salt in water, the salt disappears. You may think that a new substance has been formed. But really there is no new substance. The salt is still salt. You can still taste it. So the dissolving of anything is a physical change.
When water freezes, the change is also a physical one. The water changes from liquid(液體) to solid(固體). But it is still the same substance. That is why the freezing of anything is a physical change.
1.It is not ______ if a new substance is not formed in the change.
A.a(chǎn) physical change B.a(chǎn) chemical change
C.change of state(狀態(tài)) D.a(chǎn) change
2.The dissolving of salt in water is _________.
A.a(chǎn) physical change B.a(chǎn) chemical change
C.hydrogen and oxygen D.breaking up
3.Which is wrong according to the passage?
A.A new substance is always formed in a physical change.
B.Two kinds of changes are talked about in this passage.
C.If a change forms a new substance, it’s a chemical change.
D.The physical changes include the freezing of anything.
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—_________?
—Yes, he can.
A. What can Victor do B. Can I join the club
C. What can I do D. Can Victor join the club
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We shall never give up ______ for even one day.
A. studying B. study C. to study D. studies
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I saw him ______ the game on the computer yesterday evening.
A. played B. playing C. play D. to play
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翻譯句子,根據(jù)所給中文完成句子翻譯
1.我的爸爸五年前晚飯后?措娨,但是現(xiàn)在他習(xí)慣于讀書。
My father _____ ______ _____ TV after supper five years ago, but now he ____ _____ ____ _______ books.
2.青少年應(yīng)被允許選擇他們自己的衣服嗎?
_______ teenagers _______ ________ _______ choose their clothes?
3.學(xué)校的學(xué)生必須遠(yuǎn)離毒品。
School children ________ ________ ________ ______ drugs.
4.釣魚島自古以來是屬于中國的領(lǐng)土。
Diao Yu Iland ____________ _________ China from ancient times to the present.
5.我的姐組學(xué)習(xí)十分努力,她實現(xiàn)了上大學(xué)的夢想。
My sister studied _______ _______ that her college dream ______ ______.
6.李老師高度贊揚了他的學(xué)生。
____________________________________。
7.您能告訴我他們在玩電子游戲嗎?
________________________________?
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Ticket Prices for Shanghai Expo | ||||
Time Types | Pre-sale(預(yù)售)Ⅰ Mar. 27,2009 ~Jun. 30,2009 | Pre-sale Ⅱ Jul. 1,2009 ~Dec. 31,2009 | Pre-sale Ⅲ Jan. 1,2010 ~Apr. 30,2010 | Expo Session(期間)May. 1,2010 ~Oct. 31,2010 |
Peak Day Ticket (指定日門票) | ¥170 | ¥180 | ¥190 | ¥200 |
Standard Day Ticket (平日門票) | ¥130 | ¥140 | ¥150 | ¥160 |
3-Day Ticket | N/A(無) | ¥400 | ||
7-Day Ticketw w w .x k b 1.c o m | ¥900 | |||
Evening Ticket | N/A | ¥90 |
( )1.If Joe wanted to buy the cheapest ticket for Peak Day,he could book(預(yù)定)one during .
A.Pre - sale Ⅰ B.Pre – sale Ⅱ C.Pre – sale Ⅲ D.Expo Session
( )2.On March 1,2010,Sue bought two Standard Day tickets for her parents.
She paid for them.
A.¥380 B.¥300 C.¥260 D.¥180
( )3.It cost Thomas ¥160 to get a ticket for Standard Day.He probably bought it on .
A.April 23,2009 B.August l,2009 C.February 2,2010 D.May 20,2010
( )4.Kathy spent 900 yuan on a ticket for Shanghai Expo.Her visit can last days.
A.one B.three C.seven D.ten
( )5.Visitors to Shanghai Expo could buy tickets only after May 1,2010.
A. morning B.a(chǎn)fternoon C.evening D.Midnight
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Please clean the room at once, it’s too ______.
A. clean B. tidy C. untidy D. busy
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---When did Joe get the bike?
---He got it on ____________.
A. her six birthday B. his six birthday C. her sixth birthday D. his sixth birthday
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