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 from 43 to 50.
A rather surprising geographical feature of Antarctica is that a huge freshwater lake, one of the world’s largest and deepest, lies hidden there under four kilometers of ice. Now known as Lake Vostok, this huge body of water is located under the ice block that comprises Antarctica. The lake is able to exist in its unfrozen state beneath this block of ice because its waters are warmed by geothermal heat from the earth’s core. The thick glacier above Lake Vostok actually insulates it from the frigid temperatures on the surface.
The lake was first discovered in the 1970s while a research team was conducting an aerial survey of the area. Radio waves from the survey equipment penetrated the ice and revealed a body of water of indeterminate size. It was not until much more recently that data collected by satellite made scientists aware of the tremendous size of the lake; the satellite-borne radar detected an extremely flat region where the ice remains level because it is floating on the water of the lake.
The discovery of such a huge freshwater lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have affected organisms in more exposed areas. The downside of the discovery, however, lies in the difficulty of conducting research on the lake in such a harsh climate and in the problems associated with obtaining uncontaminated samples from the lake without actually exposing the lake to contamination. Scientists are looking for possible ways to accomplish this.
Lake Vostok is potentially important to scientists because it______.
A. can be studied using radio waves
B. may contain uncontaminated microbes
C. may have elevated levels of ultraviolet light
D. has already been contaminated
Giải bởi qa.haylamdo.com
Đáp án B
Hồ Vostok rất quan trọng đối với các nhà khoa học bởi vì
A. có thể được nghiên cứu qua việc sử dụng sóng radio
B. có thể chứa các vi trùng chưa bị làm ô nhiễm
C. có thể làm tăng hàm lượng ánh sáng tia cực tím
D. đã bị nhiễm bẩn
Dẫn chứng: The discovery of such a huge freshwater lake trapped under Antarctica is of interest to the scientific community because of the potential that the lake contains ancient microbes that have survived for thousands of years, unaffected by factors such as nuclear fallout and elevated ultraviolet light that have affected organisms in more exposed areas.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
The town _____________ we are living is noisy and crowde d
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.
Just as more English is being taught in primary schools worldwide, so there are a growing number of language schools in English-speaking countries that are (31)___________ courses for younger learners. In Britain most young learners' courses are (32)___________ to 11-year-olds and upwards, with a few that cater for children as young as seven. But what is a sensible age to start sending children abroad to study? (33)___________, even adult learners find the experience of travelling to a strange country and encountering people who speak an incomprehensible language challenging?
A great deal depends on how a child has been (34)___________ up. For example, if they have been exposed to new things and have already started to learn independence, then they are likely to prosper. Further on, children who have previously travelled abroad with their parents are usually more prepared for a study (35)___________ in an English-speaking country on their own than those who have not
Điền vào ô số 33
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
The Earth is the only planet with a large number of oxygen in its atmosphere.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
We cleaned up the room as soon as the guests ____________.
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
A five-thousand-dollars reward was offered for the capture of the escaped criminals
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions
I’m really feeling under the weather today; I have a terrible cold
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Our teacher told us that if we don’t ___________ the environment, our grandchildren may not even be able to carry on living
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Robert Frost was not well known as a poet until he reached the forties
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Let me please _______ my memory before I get down to answering the questions
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Due to _______ fuel prices, the company has decided to add a surcharge to all deliveries
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions
Because she usually behaves in a very weird way, people think that she’s rather strange
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
“How tall is Ralph?” “He’s __________ than you are.”
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions
For a decade, that scientist has studied centenarians, looking for genes that contribute to longevity
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
Mr. Hamilton recently found a sister who was thought ____________ thirty years ago
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions
It was ______ we met Mr. Brown in Tokyo
