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The Earth has the shape of a(n) ______.
A.sphere
B.oblate spheroid
C.spheroid of revolution
D.oblate eggoid
参考答案
更多 “ The Earth has the shape of a(n) ______.A.sphereB.oblate spheroidC.spheroid of revolutionD.oblate eggoid ” 相关考题
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The inside of the earth is very, very ____. The rock has melted like ice.
A.deepB.coldC.hardD.hot
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The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.A. whatB. whichC. thatD. though
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Everything on the earth _____ all the time.A. is changingB. is changedC. has changedD. has been changed
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It has been proven that on the Earth, the closer one stays to the Earth, the more slowly time would seem to go.()
此题为判断题(对，错)。
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The region of high pressure extending around the Earth at about 35°N latitude is called the_____A.prevailing westerliesB.horse latitudesC.troposphereD.doldrums
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Our teacher told us that the earth _____ from west to east.
A、turnB、turnsC、turnedD、has turned
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如下程序声明了一个二维图形类TwoDShape,从其派生出矩形类Rec。 include include
如下程序声明了一个二维图形类TwoDShape，从其派生出矩形类Rec。include＜iostream＞include＜string＞using namespaee std,class TwoDShape{// 二维图形类char name[20];public:TwoDShape (char * n="unknown") {strcpy(name, n);}Char * getName(){return name;}【 】=0;};class Rec: public TwoDShape{double width, heightpublic:Rec(double w-=0. 0,double h=0. 0):TwoDShape("rectangle"){ width=w; height=h; }double getWidth() {return width;}double getHeight() {return height;}double area() {return width * height;}};int main() {TwoDShape * shape;Shape=new Rec(2.1,3.0);cout＜＜"object is"＜＜shape-＞getName()＜＜"\n";cout＜＜"Area is"＜＜shape-＞area()＜＜"\n";return 0}请将程序补充完整，使程序在运行时输出：abject is triangleArea is 6.3
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共用题干
Earth's Inner CoreScientists have long struggled to understand what lies at the planet's center.Direct observation of its center is impossible,so researchers must_________(1)to other evidence.In 1889,a German scientist detected a severe earthquake in Japan.Geophysicists concluded that shock waves_________(2) jolts（晃动）from one side of Earth through the center to the other side.Then in 1936,Danish geophysicist lnge Lehmann studied the waves' __________ (3) to determine that within Earth's core of molten（熔化了的）iron lies a solid inner core一but_________(4) that core was made of eluded（难倒）her. Other geophysicists quickly determined that Lehmann's inner core was composed mostly_________(5) iron.Since then,Lehmann's discovery has _________(6) conventional Earth science.But now scientists are challenging traditional theory with new and radical_________(7).For example,Earth's center could actually contain an"inner core within the inner core."claim lshii and colleague Adam Dziewonski.Analyzing hundreds of thousands of earthquake wave _________(8),they maintain that the inner core has at its heart a tiny, even more solid sphere（球体）.This sphere"may be the oldest fossil_________(9)from the formation of Earth,"says Dziewonski.Dziewonski and Ishii speculate that shortly _________(10)Earth formed around 4.8 billion years ago,a giant asteroid（小行星）smashed into the young planet and nearly melted it.But Earth's center didn't quite melt;it_________(11)mass as the planet cooled. The core within a core may be the kernel（核心）that endured. " Its presence could change our basic ideas about the_________(12)of the planet,"Dziewonski says.Dziewonski's idea is tame（温和的）compared to the_________( 13 ) theories ofindependent geophysicist J. Marvin Herndon.Earth's inner core is made not of iron,he claims,but a_________(14)of nickel and silicon.Herndon has a truly revolutionary notion : Within the nickel silicide（硅化物）inner core is also an "inner" inner core一an 8km-wide ball of the element uranium.Uranium is radioactive.Herndon thinks the uranium releases heat energy as its atoms_________(15)fission-split and crash into one another in a chain reaction.In other words,we may live on top of a gigantic, "natural" nuclear power plant._________(12)A:size B:origin C:structure D:shape
考题
The word "springs" in Paragraph 3 meansA a small stream of water flowing naturally from the earth.
B the season of the year，occurring between winter and summer.
C the act or an instance of jumping or leaping.
D a length of metal wound around，which returns to its original shape after being pushed.
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Which of the following has NO effect on controlling the access permissions needed to run the "date" command on the remote machine "Earth" using the following syntax？rsh Earth date（）。A、The local file： /etc/.netrcB、The remote file： ~/ .rhostsC、The securetcpip commandD、The remote file： /etc/hosts.equiv
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单选题According to the passage, the Earth’s magnetic field has _____.A
begun to change in the opposite directionB
been weakening in strength for a long timeC
caused the changes on the polaritiesD
misguided many a man and animal
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单选题Stephen Hawking believes that earth is unlikely to be the only planet ______ life has developed gradually.A
thatB
whereC
whichD
whose
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单选题The sentence “Our planet has shrunk” underlined in Paragraph 1 means that.A
the earth has become physically smallerB
the more advanced ways of traveling has made the distance between countries shorterC
the traditional concept of our planet has become out-of-dateD
modern means of communication has made it much easier for people to communicate with each other from different parts of the world
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单选题The Earth has the shape of a(n) （）.A
sphereB
oblate spheroidC
spheroid of revolutionD
oblate eggoid
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单选题Which of the following has NO effect on controlling the access permissions needed to run the "date" command on the remote machine "Earth" using the following syntax？rsh Earth date（）。A
The local file： /etc/.netrcB
The remote file： ~/ .rhostsC
The securetcpip commandD
The remote file： /etc/hosts.equiv
考题
单选题The sentence “Our planet has shrunk” underlined in Paragraph 1 means that __________.A
the earth has become physically smallerB
the more advanced ways of traveling has made the distance between countries shorterC
the traditional concept of our planet has become out-of-dateD
modern means of communication has made it much easier for people to communicate with each other from different parts of the world
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单选题What has the United Nations made up its mind to do from the passage?A
Set an Earth Protecting DayB
Protect and love the earthC
Hold an international meetingD
Find out what is making the pollution
考题
单选题According to the passage, _____.A
we should not worry about the transition of the Earth’s magnetic fieldB
the Earth’s magnetic field will not change for at least 2000 yearsC
the Earth’s magnetic field has decreased its strength rapidlyD
the transition of the Earth’s magnetic field can be controlled by modern science
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单选题Due to the shape of the（），whereby forward- and aft ship are differently shaped，a trim correction on the draft measurement has to be done.A
spheroidB
loxodromeC
careneD
sphere
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单选题Others argue that since the earth has endured a long string of ice ages in the last two million to three million years, any warming is（）to be temporary.A
seemedB
likelyC
tendedD
possible
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问答题On a much general level, it has helped shape our history and continues to shape our culture.
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单选题For all its extremes, Venus is a（n） incalculable laboratory for researchers studying the weather and climate of earth.A
invaluableB
valuableC
valueD
valueless
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单选题Shell plating that has curvature in two directions and must be heated and hammered to shape over specially prepared forms is called（）.A
compound plateB
furnaced plateC
flat plateD
rolled plate
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