around 3) __________ years ago
around 3) __________ years ago
参考答案和解析
B
相关考题：
The Chinese people first _______ paper about 2 000 years ago. A.discoveredB.foundC.experiencedD.invented
He bought a car several years ago, and now it is still in good () A.wayB.situationC.moodD.condition
I’m sorry to hear that his father died five years ago.(改为同义句)I’m sorry to hear that his father has ________ ________ for five years.
People tend to talk about presents in a fairly loving way. A woman whose mother had died years ago described the many gifts around her house.These were gifts that her mother had given her over the years:“I appreciate these, and they mean something to me,”the woman said,“because I remember the occasions they were given on, and that they were from my mother, and the relationship we’ve had.”The gifts remain and keep the relationship alive in mind. This woman felt the same way about the gifts she gave to others. She hoped that the recipients would look at here gifts in years to come and
The sentence" We have people. . . down the road" ( Line 4, Paragraph 2)probably means[ A] we have people calling us for parking space two years ahead of time.[ B] people called us for permission to use the places two years ago.[ C] we received calls from people down the road two years ago.[D] people called us for school vacancies two years in advance.
The book shows the very interesting ________ between life now and life a hundred years ago.A contrastB contactC contractD controversy
I first heard this story _____ from a girl I had met in New York's Greenwich Village.A. since a few yearsB. a few years beforeC. for a few yearsD. a few years ago
His father gave up smoking two years ago . 学科网A. enjoyed B. failed C. stopped 学科 His father gave up smoking two years ago .A. enjoyed B. failed C. stopped
Edison invented the light bulb many years ago（改为被动语态）The light bulb__________ __________by Edison many years ago．
Stephen Hawking has spent around ten years explaining the secrets ofA.RightB.WrongC.Not mentioned
共用题干Earth Rocks onMost of the time,the ground feels solid beneath our feet. That{S comforting. But it's also misleading because there's actually a lot going on underground.Masses of land(called plates)slip,slide,and bump against each other,slowly changing the shape of continents and oceans over millions and billions of years.Scientists know that Earth formed about 4.5 billion years ago.They also know that our planet was hot at first. As it cooled , its outermost layer , called the crust（地壳）, eventually formed moving plates. Exactly when this shift happened,however,is an open question.Now,an international group of researchers has an answer. They'ye found new evidence suggesting that Earth's crust started shifting at least 3.8 billion years ago.The new estimate is 1.3 billion years earlier than previous ones.Not long before 3. 8 billion years ago,lots of asteroids（小行星）were hitting Earth,keeping its crust in a hot,melted state.After the hard crust formed,much of it sank at various times into the planet's hot in- sides.There,it melted before returning to the surface.In some places,however,the crust never sank.One of the oldest such places is in Greenland,in an area called the Isua supracrustal（上地壳） belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor,but now it is exposed to air.The researchers recently took a close look at the Isua supracrustal belt. They noticed long,parallel cracks in the rock that have been filled in with a type of volcanic rock.To explain this structure,the scientists propose that tension in the crust caused the seafloor to crackopen long ago. Hot , liquid rock , called magma（岩浆）,flowed up slowly from deep inside Earth to fill the cracks.Finally,the whole area cooled,forming what we see today.That explanation,plus chemical clues inside the rock,suggests that the Isua supracrustal belt was once part of a plate under the ocean,beginning around 3.8 billion years ago.The formation of the Isua supracrustal belt is thought to have started about 3.8 billion years ago.A:RightB:WrongC:Not mentioned
共用题干Earth Rocks onMost of the time,the ground feels solid beneath our feet. That{S comforting. But it's also misleading because there's actually a lot going on underground.Masses of land(called plates)slip,slide,and bump against each other,slowly changing the shape of continents and oceans over millions and billions of years.Scientists know that Earth formed about 4.5 billion years ago.They also know that our planet was hot at first. As it cooled , its outermost layer , called the crust（地壳）, eventually formed moving plates. Exactly when this shift happened,however,is an open question.Now,an international group of researchers has an answer. They'ye found new evidence suggesting that Earth's crust started shifting at least 3.8 billion years ago.The new estimate is 1.3 billion years earlier than previous ones.Not long before 3. 8 billion years ago,lots of asteroids（小行星）were hitting Earth,keeping its crust in a hot,melted state.After the hard crust formed,much of it sank at various times into the planet's hot in- sides.There,it melted before returning to the surface.In some places,however,the crust never sank.One of the oldest such places is in Greenland,in an area called the Isua supracrustal（上地壳） belt. The rocky crust there is between 3. 7 and 3. 8 billion years old. The belt was once part of the seafloor,but now it is exposed to air.The researchers recently took a close look at the Isua supracrustal belt. They noticed long,parallel cracks in the rock that have been filled in with a type of volcanic rock.To explain this structure,the scientists propose that tension in the crust caused the seafloor to crackopen long ago. Hot , liquid rock , called magma（岩浆）,flowed up slowly from deep inside Earth to fill the cracks.Finally,the whole area cooled,forming what we see today.That explanation,plus chemical clues inside the rock,suggests that the Isua supracrustal belt was once part of a plate under the ocean,beginning around 3.8 billion years ago.The shape of lands and oceans are slowly changed with the movements of plates.A:RightB:WrongC:Not mentioned
单选题When was paper first created?AAbout 2000 years ago.BIn the 19th century.CAbout 1000 years ago.DIn the 11th century.
问答题Four years ago, Jane was twice as old as Sam. Four years on from now, Sam will be 3/4 of Jane's age. How old is Jane now?
单选题Jackson ______ school two years ago and he ______ for two years.Aleaves; has goneBleft; has been awayCleaves; has been awayDleft; has gone
单选题Seven years ago, Scott was 3 times as old as Kathy was at that time. If Scott is now 5 years older than Kathy, how old is Scott ?A12.5B13C14D14.5
单选题It can be learned that Methuselah _____.Ais an ancient tree about 2000 years oldBis grown from a seed about 2000 years oldChad already become extinct 2000 years agoDhas been the food source since 2000 years ago
单选题I have lived in this city thirty years ago, so I know it quite well.AinBthirty years agoCsoDquite well
单选题When was the first story about the monster told?A200 years ago.BOver 500 years ago.CIn 1933.DIn 1960.
单选题Which of the following sentences is INCORRECT?AHis father has been dead for six years.BHis father died six years ago.CIt’s six years since his father had died.DIt has been two years since his father’s death.