Energy is()makes one work. A. what B.something C.anything D. that
Energy is()makes one work.
A. what
B.something
C.anything
D. that
Energy is()makes one work.
A. what
B.something
C.anything
D. that
听力原文:M: So, what is your biology project about?
W: It is about microorganisms that…en, microorganisms that live by Chemosynthesis.
M: Ehm…what’s Chemosynthesis?
W: Well, it’s pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight?
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight?
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the sea floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all along the vents there are these unusual microorganisms. They are called archaean. And these archaean use chemical reactions to get their energy from the minerals, the minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So chemosynthesis is getting their energy from chemicals?
W: That is right.
M: That makes archaean very different from other forms of life.
W: And their genetic makeup is very different too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Waa, that’s a really interesting project.
(35)
A.How hydrothermal vents are formed.
B.How living things get energy from sunlight
C.The harmful effects of certain chemicals in the ocean.
D.Microorganisms that get energy from chemical reactions.
听力原文:M: What is your biology project about?
W: It is about microorganisms that microorganisms that live by Chemosynthesis.
M: Ehm what's Chemosynthesis?
W: Well, it's pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight?
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight?
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the sea floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all around the vents there are these unusual microorganisms. They are called archaea. And these archaea use chemical reactions to get their energy from the minerals, the minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So ehemosynthesis is getting energy from chemicals?
W: That is right.
M: That makes archaea very different from other forms of life.
W: And their genetic makeup is very different too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Waa, that's a really interesting project.
What is the woman's project mainly about?
A.How hydrothermal vents are formed.
B.How living things get energy from sunlight.
C.The harmful effects of certain chemicals in the ocean.
D.Microorganisms that get energy from chemical reactions.
听力原文:M: So, what is your biology project about?
W: It is about microorganisms that live by chemosynthesis.
M: Err...what's chemosynthesis?
W: Well, it's pretty complicated. You know how most life on Earth depends either directly or indirectly on sunlight?
M: You mean like plants get energy directly from sunlight, and animals eat plants, so they depend indirectly on sunlight?
W: Right. But down on the ocean floor, there is no sunlight. In some places though, there are hydrothermal vents, which are small cracks on the ocean floor. And these vents release heat and minerals from the inside of the Earth into the seawater. And all along the vents there are these unusual microorganisms. They are called archaean. And these archaean use chemical reactions to get their energy from the minerals. The minerals that are released by the vents. So their energy comes from chemical reactions, not sunlight.
M: So chemosynthesis is getting their energy from chemicals?
W: That's right.
M: That makes archaean very different from other forms of life.
W: And their genetic makeup is very different, too. They are one sort of organisms just like bacteria are, but genetically they are as different from bacteria as we humans are.
M: Wah, that's a really interesting project.
(23)
A.How hydrothermal vents are formed.
B.How living things get energy from sunlight.
C.The harmful effects of certain chemicals in the ocean.
D.Microorganisms that get energy from chemical reactions.
听力原文: Living things take from their environment and give back to their environment. In other words, living things and their environment are interdependent. Living things take matter
and energy from the environment, and return matter and energy to the environment. For instance, animals feed on plants, or on other animals. And they return materials to the environment. This interaction goes on continually.
Man also is in active give-and-take relations with his environment. However, there is one way in which man is different. Other living things do not change their environment the way man does. Man is not only adapted to the environment. He ahem his environment in other complex ways.
How is it that man can alter his environment, as no other living thing can? It is because of his brain. With his brain, man learns.
Man's brain makes it possible for him to record what he learns. He puts his records in words, in pictures, in sounds. In this way man can pass on what he learns to other men.
(30)
A.They have nothing to do with each other.
B.They have something to do with each other.
C.They help each other in 'a way.
D.They depend on each other.
Where most likely can this article be found?
A.In a computer manual.
B.In a transportation guide.
C.In a business magazine.
D.In a travel guidebook.
Energy is ____________ makes things work.
A、what
B、which
C、all what
D、that
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A, B, C or D. (40 points)
Nuclear fission is the splitting of the nucleus of an atom. Only a few elements are suitable for use in this way, the most important ones being Uranium-235, Uranium-233, and Plutonium-239. When a nucleus of one of these elements is struck by a free neutron it breaks down into two lighter nuclei which fly apart at high speed, colliding with surrounding atoms. Their kinetic energy is converted into heat energy. At the same time, two or three free neutrons are released and one of them enters the nucleus of a neighbouring atom, causing fission to occur again; and so on. The reaction spreads very quickly, with more and more heat energy released. This is called a "chain" reaction because the splitting of each nucleus is linked to another, and another and another.
If this reaction takes place in an atomic bomb, where nothing is done to slow it down, the result is a violent explosion that can destroy a town in a few seconds. Fission can also, however, take place within a construction called a nuclear reactor, or atomic pile. Here the highly fissile material (U-235, U-233, Pu-239) is surrounded by a substance that is non-fissile, for instance graphite. This material is called a moderator. The neutrons lose some of their energy and speed through colliding with the atoms of the moderator. Energy—heat energy—is still created on an enormous scale, but no expansion takes place. The moderator has another function: by slowing down the speed of the free neutrons, it makes it more likely that one of them will collide with the nucleus of a neighbouring atom to continue the chain reaction.
The chief advantage of nuclear energy is that it does not depend on any local factors. A nuclear reactor, unlike an oil-well or a coalmine, does not have to be sited on top of a fossil-fuel source; unlike the solar energy unit, it does not have to go out of production when the sun is not shining; unlike hydro-electric power, it does not depend on a large flow of water which may be reduced during some seasons of the year. With an atomic power station, the only limiting factor is that of safety.
In the opposite process, nuclear fusion, two nuclei come together, to form. a new nucleus of a different kind and this process also releases energy on an enormous scale. Fusion can only occur under conditions of very great heat—at least 50,000,000 degrees Celsius. (The temperature at the centre of the sun is estimated as 130,000,000 degrees Celsius.) A fusion reaction on earth has already been created—the hydrogen bomb. This is an uncontrolled reaction. It is not yet possible to produce a controlled fusion reaction that can be used for the production of useful energy.
Nuclear energy can be thought of as a kind of square, three of the quarters of the square are known and used, but the fourth cannot yet be used.
Which of the following headings is that of Paragraph Two?
A.Nuclear Fusion
B.The Nuclear Fission Chain Reaction
C.Uncontrolled and Moderated Nuclear Reactions
D.The Advantages of Nuclear Energy
We know the fact______the energy makes the cells able to do their work.
A.that
B.which
C.what
D.such
Section B
Directions: In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D.
听力原文: Many analysts, energy companies and their investors believe that gas will soon become as vital to the world's economy as petroleum is today.
And we've certainly seen the demand for gas surge in recent years. (26) One of the main reasons for this is the search for more environmentally-friendly fuels.
Gas burns much more cleanly than oil or coal. In fact, it's the cleanest burning fossil fuel, which makes it a very popular choice for new power stations all over the world.
However, until quite recently it was difficult for the global gas industry to develop. (27) The problem is that gas, by its very nature, isn't as easy to transport as oil and coal. Obviously, it's gaseous at room temperature, so a system of pipelines is needed to get it to the customer. This meant in the past, it could only be sold to customers who lived near a natural gas supply. It was too expensive to transport it very long distances via pipelines.
Fortunately. there is now a process which makes it easier to transport gas over longer distances. (28) It's called liquefied natural gas. Put simply, gas can now be frozen into liquid form. and transported to distant countries in refrigerated tankers. When the LNG is delivered it is heated and converted back into gas form. Then it is supplied to customers using local pipelines. And the potential profits are enormous for energy firms with the capital to develop LNG projects. Many experts believe that gas will be the dominant fuel for at least another 50 years.
26.What is one of the main reasons for the increasing demand for gas?
27.What is the problem of the global gas industry?
28.What can we learn about the project “IMG”?
(27)
A.The large profit of gas.
B.The lower price of gas.
C.The search for environmentally-friendly fuels.
D.The easy long-distance transportation of gas.
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