人是有什么演变而来的()A、猴子 B、类人猿 C、猩猩 D、长臂猿

题型:单项选择题

问题:

人是有什么演变而来的()

A、猴子

B、类人猿

C、猩猩

D、长臂猿

考点:百科知识竞赛百科知识竞赛题库
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引爆炸药,引线燃烧速度0.8cm/s,爆破安全距离至少100m,当引线是40cm长时,引爆点炮手安全跑动速度是[      ]

A. 等于2m/s

B. 小于2m/s

C. 大于或等于2m/s

D. 任意值

题型:单项选择题

绿色食品指的是(  )

A.绿颜色的食品

B.经济价值高的营养食品

C.有叶绿素的食品

D.安全、无公害的营养食品

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“Down-to-earth” means someone or something that is honest, practical and easy to deal with. It is   36  to find someone who is down-to-earth. A person who is down-to-earth is easy to talk to and   37  other people as equals. A down-to-earth person is just the   38  of someone who acts important and proud.
Down-to-earth persons   39  be important members of society, of course.   40  they do not let their importance “go to their heads”. They do not   41  themselves to be better persons than others of less importance. Someone who is filled with his own importance and pride, often without cause, is   42  to have “his nose in the air”. There is   43  way a person with his nose in the air can be down-to-earth.
Americans   44  another expression that means almost the same as “down-to-earth”. The expression is “both-feet-on-the-ground”. Someone with both-feet-on-the-ground is a person with a good   45  of reality. He   46  what is called “common sense”. He may have   47 , but he does not allow them to   48  his knowledge of what is real.
The opposite kind of   49  is one who has his “head-in-the-clouds”. A man with his-head-in-the-clouds is a dreamer whose   50  is not in the real world.
  51 , such a dreamer can be brought back to earth.   52  words from a teacher can usually bring a day-dreaming student down-to-earth.
Usually, the person who is down-to-earth is very   53  to have both feet on-the –ground.  54  we have both our feet on-the –ground, when we are down-to-earth, we act   55  and openly towards others. Our lives are like the ground below us, solid and strong.
小题1:
A.pleasantB.sadC.commonD.surprising
小题2:
A.meetsB.welcomesC.receivesD.accepts
小题3:
A.caseB.kindC.oppositeD.example
小题4:
A.mustB.mayC.shouldD.will
小题5:
A.But B.SoC.ForD.And
小题6:
A.wishB.expectC.desireD.consider
小题7:
A.saidB.toldC.askedD.made
小题8:
A.someB.aC.noD.every
小题9:
A.discoverB.findC.makeD.use
小题10:
A.understandingB.wishC.reasonD.expectation
小题11:
A.demandsB.lacksC.hasD.likes
小题12:
A.fortunesB.dreamsC.achievementsD.disadvantages
小题13:
A.blockB.protectC.ownD.gain
小题14:
A.ideaB.peopleC.attitudeD.person
小题15:
A.mindB.lifeC.bodyD.head
小题16:
A.AlwaysB.ThereforeC.HoweverD.Sometimes
小题17:
A.SharpB.AllC.NoD.Bad
小题18:
A.possibleB.probableC.likelyD.able
小题19:
A.ThoughB.SinceC.WhenD.Unless
小题20:
A.kindlyB.directlyC.friendlyD.honestly
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粮油籽粒中占全粒重量最多的是()。

题型:单项选择题

光纤通信是通过将电信号调制到光载波上而实现信息传送的。

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