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[单选题]
Three-fourths of the surface of the earth ________ sea.
A.is
B.are
C.is of
D.has
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
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A.is
B.are
C.is of
D.has
如果结果不匹配，请 联系老师 获取答案
更多“Three-fourths of the surface o…”相关的问题
A．The surface of the ocean is expanding.
B．The surface of earth contains tons of cosmic dust.
C．Volcanic activity is increasing.
D．Thousands of comets are colliding with earth's atmosphere.
It can be learned from the passage that about four billion years ago ______.
A. the earth was in molten state
B. the earth surface temperature was above 100℃
C. the earth surface temperature was below 100℃
D. rain water could remain on the earth
Earth has an atmosphere, which protects the surface from harmful rays.
A．minerals
B．substances
C．gases
D．beams
A．Seeing
B．To be seen
C．Seen
D．Having seen
Surrounding the earth was an unbroken canopy of clouds miles thick and made up mostly of water vapor. Rain falling toward the still-hot earth was heated to steam and rose to the clouds again. After many millions of years, as the earth continued to cool, its surface temperature fell below the boiling point of water. Rainwater could now remain on the earth, covering its whole surface except for the higher places on earth that had been formed from the lighter rock materials.
In 1970, scientists had pieced together evidence that the lighter rock materials had formed one huge continent by a vast ocean. Then, about 200 million years ago, the great continent began to break up, the pieces moving slowly apart.
The onrushing waters of the single huge ocean now entered and filled the spaces between the separating continents--and became the several oceans and seas we know today.
This passage mainly talks about ______.
A．the origin of the earth
B．the origin of the ocean
C．the history of the earth
D．the forming of the earth's crust
A. the star moved away from the sun
B. another star happened to come near the sun
C. fhe sun and the moon raised the tides on the earth
D. a large tidal wave of a star travelled over the surface of the sun
According to the passage, which is true about the ocean？
A. The waters of the ocean came from rain water.
B. The ocean was formed from the, lighter rock materials.
C. The vast single ocean formed about 200 million years ago.
D. The ocean covered the whole surface of the earth at very beginning.
Coal, oil, natural gas, and all other fuels are stored energy from the sun. Some was collected by this season's plants as carbon compounds. Some was stored by plants and trees ages ago. Even waterpower derives from the sun. Water turned into vapor by the sun falls as rain. It courses down the mountains and is converted to electric power. Light transmits only the energy that comes from the sun's outer layer, and much of this energy that is directed towards the earth never arrives. About nine tenths of it is absorbed by the atmosphere of the earth. In fact, the earth itself gets only one half millionth of the sun's entire output of radiant energy.
The sun is the source of all of the following EXCEPT______.
A．gasoline
B．natural gas
C．atomic power
D．animal fat
We believe, however, that some two thousand million years ago, another star wandering through space, happened to come near our sun. Just as the sun and the moon raise tides on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave' must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星).
Millions of stars are______.
A．following a regular path in space
B．always travelling together
C．seldom wandering about in the universe
D．moving about without a fixed course
？？？？？？You might think that “global warming” means nothing more than a rise in the world’s temperature. But rising sea levers caused by it have resulted in the first evacuation of an island nation -the citizens of Tuvalu will have it leave their homeland.？？？？
？？？？During the 20th century, sea level rose ？？8-12 inches. As a result, Tuvalu has experienced lowland flooding of salt water that has polluted the country’s drinking water.？？
？？Paani Laupepa, a Tuvaluan government official, reported to the Earth Policy Institute that the nation suffered an unusually high number of fierce storms in the past ten years. Many scientists connect higher surface water temperatures resulting from global warming to greater and more damaging storms.？？
？？Laupepa expressed dissatisfaction with the United States for refusing to sign the Kyoto Protocol,an international agreement calling for industrialized nations to reduce their green house gas emissions（导致温室效应的气体排放）,which are a main cause of global warming. “By refusing to sign the agreement, the US has effectively taken away the freedom of future generations of Tuvaluans to live where their forefathers have lived for thousands of years.” Laupepa told the BBC.？？
？？Tuvalu has asked Australia and New Zealand to allow the gradual move of its people to both countries.？？
？？Tuvalu is not the only country that is vulnerable （易受影响的）to rising sea levels. Maumoon Gayoon, president of the Maldives, told the United Nations that global warming has made his country of 311,000 an “endangered nation”.
？？The text is mainly about_________.？？？？
A.rapid changes in earth’s temperature
B.bad effects of global warming
C.moving of a country to a new place
D.reasons for lowland flooding
The country whose situation is similar to that of Tuvalu is__________.
A.Australia
B.New Zealand
C.the Maldives
D.the United States
Laupepa was not satisfied with the United States because it did not__________.A.agree to reduce its greenhouse gas emissions
B.sign an agreement with Tuvalu
C.allow Tuvaluans to move to the US
D.believe the problems facing Tuvalu were real
According to scientists，the DIRECT cause of more and fiercer storms is__________.A.greenhouse gas emissions in industrialized nations
B.higher surface water temperatures of the sea
C.continuous global warming
D.rising sea levels
