Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions
Three mile island nuclear power plant
America’s worst accident at a civilian nuclear power plant occurred on March 28, 1979, at Three Mile Island. Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water. This stopped the removal of heat from the reactor, and began a series of events that would change the way America thought about nuclear power.
Within ten seconds after the flow of water was blocked, the reactor vessel became hotter and the pressure rose. Safety control rods were automatically thrust down into the reactor, causing the chain reaction to stop completely. Pressure, however, continued to build. A relief valve opened but failed to close. As a result, too much water escaped, and the reactor began to melt down.
[1] Large quantities of radioactivity began to leak from the reactor. [2] Most of the radioactivity was contained, and it is likely that no one received a harmful amount of radiation. [3] “Three Mile Island” became the reason that many Americans are afraid of nuclear power to this day. [4]
Where did the first problem occur at Three Mile Island?
A. In the control rods
B. In the reactor vessel
C. In the water circulation system
D. In the reactor’s core
Giải bởi qa.haylamdo.com
Đáp án là C.
Ý trong bài: Operators were trying to repair a problem with piping in the water circulation system, and they accidentally blocked the flow of water.
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Artificial satellites provide data on atmospheric temperatures, solar radiation, and__________the earth’s surface.
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word to each of the blanks
Transport in the city
Transport plays an important role in our daily lives and in the (35)__________of life in our city. Moreover, the individual (36)__________we make when we choose how to reach our destination can have a(n) x on other people - longer traffic queues, (38)__________air quality, greater numbers of accidents and health problems. Providing more transport options/ choices will create a transport system that is safe, efficient, clean and fair.
Increasing (39)__________of the car has led to greater (40)__________of the impact it has and the real costs to us - for the economy and for the environment.
We want our city to become a successful, cosmopolitan city (41)__________the sea, where people can enjoy a high quality of life in a pleasant environment. To achieve this we need to make sure everyone has (42)__________to the services and facilities they need, through a choice of as many different (43)__________of transport as possible. We therefore welcome the Govemment’s White Paper on Integrated Transport published earlier this year and (44)__________their version of “ A new deal for transport: Better for Everyone”.
Điền vào ô 39
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word to each of the blanks
Transport in the city
Transport plays an important role in our daily lives and in the (35)__________of life in our city. Moreover, the individual (36)__________we make when we choose how to reach our destination can have a(n) x on other people - longer traffic queues, (38)__________air quality, greater numbers of accidents and health problems. Providing more transport options/ choices will create a transport system that is safe, efficient, clean and fair.
Increasing (39)__________of the car has led to greater (40)__________of the impact it has and the real costs to us - for the economy and for the environment.
We want our city to become a successful, cosmopolitan city (41)__________the sea, where people can enjoy a high quality of life in a pleasant environment. To achieve this we need to make sure everyone has (42)__________to the services and facilities they need, through a choice of as many different (43)__________of transport as possible. We therefore welcome the Govemment’s White Paper on Integrated Transport published earlier this year and (44)__________their version of “ A new deal for transport: Better for Everyone”.
Điền vào ô 41
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
Ansel Adams was a landscape photographer__________photographs of the western United state show nature on a grand scale
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Contact lenses__________of acrylic are more transparent and less fragile than lenses made of glass.
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Though it is one of the rarest metals, gold was one of the first to be discover
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Albert Emstein’s contributions to scientific theory were__________those of Galileo and Newton.
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By the time you receive this letter, I__________for Japan.
Read the followingpassage and mark the letter A, B, C or D onyour answer sheet to indicate the correct answer to each of the questions
Stellar Astronomy
Many parameters are used to describe a star. One of them is its temperature, which can be determined by simple observation; the color of a star and its temperature are related. Once the color of a star is identified, its temperature can be calculated through the use of scientific principles such as Wien’s Law.
There are different types of stars in the universe. For our purposes, we can classify them into two categories: variable and binary. Variable stars are those which show some degree of variability in their luminosity and magnitude. Luminosity refers to the amount of energy radiated by a star, while magnitude refers to its brightness. At time the degree of variability may be high, requiring a telescope with an equally high light- gathering power. This can be achieved by using a lens of large diameter, such as that of a reflecting telescope.
Binary stars are those found in pairs that revolve around a common center. The closest star to the sun, Proxima Centauri, is a binary star. To observe a binary star, the resolving power of a telescope - its ability to distinguish between two close objects having a small angular separation - must be very high.
Stellar astronomy is possible for a everyone, well beyond mere looking at the sky with the naked eye in order to identify constellations. With two basic of telescopes and rudimentary knowledge, much exploration can be achieved.
Why does the author write that “stellar astronomy is possible for everyone”?
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Science is the process of gathering knowledge and answering questions about the world and how works it
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Medicine in the future will make increasing use of high technology for the investigate and diagnosis of illness, as well as for their treatment.
Mark the letter A, B, C or D on your answer sheet to indicate the word or phrase that is CLOSEST in meaning to the underlinedpart in each of the following questions.
Local charity organizations benefited the fire victims
Mark the letter A, B, C or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.
