依据体内有无脊柱进行分类,下列动物归类正确的一组是 A.海马、斑马 B.蜜蜂、蜂

题型:选择题

问题:

依据体内有无脊柱进行分类,下列动物归类正确的一组是

A.海马、斑马

B.蜜蜂、蜂鸟

C.鱿鱼、鲤鱼

D.青蛙、蜻蜓

考点:生物分类的概念和依据
题型:选择题
There was once a boy who was very rich and clever but nothing could make him feel happy. He had almost everything a boy could ever want, so he was only ____ in the rarest objects. One day his parents bought him a very strange _____ .When the boy went to see his reflection (映像) in it, he looked very ____. He tried smiling, ____ his reflection continued with its sad expression.
____ , the boy went off to buy sweets and lots of toys. He came home as happy as he could be, but he _____ looked sad in that mirror.
“What a(n) _____ mirror! It’s the first time I’ve seen a mirror that didn’t _____ properly!”
That afternoon he went out to buy some toys and on his way he saw a little girl who was ______.The boy went over to see what had____ to her. The little girl said that she couldn’t find her parents.
Together the two children set off _____ them. As the little girl wouldn’t stop crying, the boy spent all of his money buying her sweets to _____ her up. After much walking, they _____ her parents who were looking for her, very worried.
Then the boy said ____ to the family. When seeing the time, he ____ to head for home, without toys and without____. In his room, to his great surprise, he found a(n) ______ face in the mirror. And so he understood the ____ of that mirror. The mirror could only reflect the _____ feelings of its owner. He felt really happy at having _____ that little girl.
小题1:
A.interestedB.confidentC.skilledD.rich
小题2:
A.bookB.mirrorC.sweetD.toy
小题3:
A.shy B.sadC.excitedD.beautiful
小题4:
A.for B.orC.butD.and
小题5:
A.ProudB.HungryC.SatisfiedD.Surprised
小题6:
A.already B.once C.stillD.never
小题7:
A.niceB.terrible C.bigD.expensive
小题8:
A.workB.move C.changeD.appear
小题9:
A.studyingB.playingC.sleeping D.crying
小题10:
A.devotedB.referredC.happenedD.turned
小题11:
A.in need ofB.in search ofC.in honor ofD.in charge of
小题12:
A.putB.bringC.dressD.cheer
小题13:
A.found B.recognizedC.left D.accepted
小题14:
A.no B.helloC.sorryD.goodbye
小题15:
A.decidedB.agreedC.pretendedD.refused
小题16:
A.effort B.hope C.doubtD.money
小题17:
A.redB.darkC.angryD.happy
小题18:
A.meaningB.mysteryC.game D.reason
小题19:
A.generalB.strangeC.true D.good
小题20:
A.introducedB.helped C.invitedD.saved
题型:选择题

山茶油是一种绿色保健食品,其主要成分是柠檬醛。现从山茶油中提取7.6g柠檬醛,使其在氧气中完全燃烧,生成22g二氧化碳和7.2g水,则柠檬醛中 [ ]

A.只含有碳、氢元素

B.一定含有碳、氢元素,可能含有氧元素

C.一定含有碳、氢、氧元素

D.含有的元素无法确定

题型:选择题

按建筑物的使用功能分类,生产车间属于的建筑分类为()。

A.居住建筑

B.公共建筑

C.工业建筑

D.农业建筑

题型:选择题

2008年一批官员因为山西襄汾尾矿库溃坝、山东胶济铁路火车脱轨等重大责任事故被免职。中国掀起了新一轮的“官员问责风暴”。问责制的实行

①体现了党中央制度改革的决心、国务院依法治国的决心        

②表明了党中央、国务院深化干部选拔任用

③表明了党中央、国务院加强勤政廉政建设、提高执政能力的决心

④可以解决我国出现的一切问题

A.①②③

B.②③④

C.①②

D.①③④

题型:选择题

在公钥加密系统中, ( )是不能公开的。

A.公钥

B.私钥

C.公钥加密的加密算法

D.都不能公开

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