物体间力的作用是______的.他们是同时______、同时______的,没有

题型:填空题

问题:

物体间力的作用是______的.他们是同时______、同时______的,没有先后之分.施力物体同时也是受力物体,受力物体同时也是______物体.

考点:力作用的相互性
题型:填空题

下图为某同学在实验室制取CO2并检验CO2性质的实验装置示意图.

(1)容器A中反应的化学方程式______.

(2)该同学在实验过程中,将A中产生的气体通入到B中,观察到澄清石灰水没变浑浊,则说明A瓶产生的CO2气体中混有______.

(3)由于上述原因,该同学把容器中的浓盐酸换成稀盐酸,将A中产生的气体通入到C中并收集满,再向C中倒入浓NaOH溶液,迅速用安有玻璃导管(在其下端绑好一个小气球)的胶塞塞紧,振荡,可以观察到小气球______.请写出C中反应的化学方程式______.

(4)A装置也能用来制取______;制取该气体的化学方程式______.

题型:填空题

下列关于USB移动硬盘优点的说法有误的一项是______。

A.存取速度快

B.容量大、体积小

C.盘片的使用寿命比软盘的长

D.在Windows 2000下,需要驱动程序,不可以直接热插拔

题型:填空题
There was a king who loved art very much. One day a(n)      came and said, "Please let me      a picture on a wall." The king happened to have a big new hall      . So he       the artist to work on one of the walls.
At the same time, another artist came and asked to work on the      wall. He promised he would make the same picture as the first artist’s       looking at the first artist’s work. The second artist asked to have a thick curtain       between the two walls       neither of them could see each other.
The following day they began to work. The first artist brought in a(n)       supply of paint, oil, water and so on. The second one came with a       and a bucket (桶).
A month later, the first artist’s work was completed, and the second artist said, "My wall is       too!"
The king went to       the first artist’s wall. He was pleased with it and gave the artist a large       of money. He then asked people to open the curtain.
      ! Each line was       the same as that on the opposite wall.
The king was quite satisfied and gave him double money. However, he       how the second man had made it.
"I just       the wall with the cloth," the man said       .The wall was made of white marble (大理石). He made it shine like a mirror. The reflection (倒影) of the first painting       up on it!
The       is a reflection of you too. If you are sad, the world will be sad. If you are happy, the world will be happy.
小题1:
A.editorB.serverC.actressD.artist
小题2:
A.putB.paintC.getD.copy
小题3:
A.builtB.createdC.destroyed D.founded
小题4:
A.allowedB.realizedC.persuadedD.Decided
小题5:
A.sameB.oppositeC.similarD.ordinary
小题6:
A.withB.withoutC.underD.upon
小题7:
A.put upB.put backC.put awayD.put on
小题8:
A.even ifB.so thatC.as ifD.in case
小题9:
A.commonB.artificialC.regularD.extra
小题10:
A.mirrorB.stickC.curtainD.cloth
小题11:
A.presentB.freeC.usefulD.ready
小题12:
A.seeB.touchC.researchD.Cover
小题13:
A.numberB.amountC.totalD.many
小题14:
A.AmazingB.ExcitingC.FamousD.Valuable
小题15:
A.probablyB.certainlyC.exactlyD.hardly
小题16:
A.knewB.noticedC.wonderedD.warned
小题17:
A.drewB.wipedC.facedD.displayed
小题18:
A.brieflyB.naturally C.safelyD.correctly
小题19:
A.setB.addedC.tookD.showed
小题20:
A.worldB.storyC.kingD.painter
题型:填空题

甲厂与乙公司签订了一份棉花买卖合同,约定由甲厂向乙公司提供优质棉50吨,合同总价款 10万元,乙公司预付3万元价金。后应甲厂要求,乙公司又支付定金2万元。事后,甲厂因故违约,未向乙公司提供棉花。甲厂应向乙公司依法偿付多少金额( )

A.5万元

B.4万元

C.7万元

D.7万元及3万元价金的利息

题型:填空题

家庭习惯养成中要坚持一致性、示范性、循序渐进和反复性原则。

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