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.MODERN SCIENCEIt seems entirely natural to us that there are teams of scientists in universities and (46) _______ institutions around the world, attempting to discover the way the world works. (47) _______, it hasn’t always been that way. Although the scientific method is now four or five hundred years old, the ancient Greeks, for example, believed that they could (48) _________ the cause of natural events just by the power of thought. During the 17th century, more and more people began to realize that they could test their scientific ideas by designing a relevant experiment and seeing what happened. A lot of (49) _________ was made in this way by individual scientists. These men and women often worked alone, carrying out research into many different areas of science, and they often received very little (50) _________ for their hard work. At the start of the 20th century, though, it became clear that science was becoming more complicated and more expensive. The individual scientists disappeared, to be replaced by highly qualified teams of experts. Modern science was born.(47)A.However B.Accordingly C.Thus D.Besides
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.He last visited London three years ago.A.He didn't visit London three years ago. B.He has been in London for three years.C.He was in London for three years. D.He hasn't visited London for three years.
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.Unfortunately, the sunny intervals we were promised have been few and far between.A.unusualB.extraordinaryC.rareD.frequent
Military is ______ in this country. Every man who reaches the age of 18 has to serve in the army for two years.A.compulsory B.optional C.illegal D.unnecessary
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions._______ toward shore, its shape is changed by its collision with the shallow sea bottom.A.During a wave rollsB.As a wave rollsC.A wave rollsD.A wave’s rolling
Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part is pronounced differently from that of the rest in each of the following questions.A.teaching B.ache C.architect D.school
Choose the correct answer to the each of the following questions.The place ......................... we spent our holiday was really beautiful.A.what B.who C.where D.which
__________(64)A.thanB.beforeC.thereforeD.then
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.The first two decades of this century were dominated by the microbe hunters. These hunters had tracked down one after another of the microbes responsible for the most dreaded scourges of many centuries: tuberculosis, cholera, diphtheria. But there remained some terrible diseases for which no microbe could be incriminated: scurvy, pellagra, rickets, beriberi. Then it was discovered that these diseases were caused by the lack of vitamins, a trace substance in the diet. The diseases could be prevented or cured by consuming foods that contained the vitamins. And so in the decades of the 1920's and 1930's, nutrition became a science and the vitamin hunters replaced the microbe hunters.In the 1940's and 1950's, biochemists strived to learn why each of the vitamins was essential for health. They discovered that key enzymes in metabolism depend on one or another of the vitamins as coenzymes to perform the chemistry that provides cells with energy for growth and function. Now, these enzyme hunters occupied center stage.You are aware that the enzyme hunters have been replaced by a new breed of hunters who are tracking genes - the blueprints for each of the enzymes - and are discovering the defective genes that cause inherited diseases - diabetes, cystic fibrosis. These gene hunters, or genetic engineers, use recombinant DNA technology to identify and clone genes and introduce them into bacterial cells and plants to create factories for the massive production of hormones and vaccines for medicine and for better crops for agriculture. Biotechnology has become a multibilliondollar industry.In view of the inexorable progress in science, we can expect that the gene hunters will be replaced in the spotlight. When and by whom? Which kind of hunter will dominate the scene in the last decade of our waning century and in the early decades of the next? I wonder whether the hunters who will occupy the spotlight will be neurobiologists who apply the techniques of the enzyme and gene hunters to the funtions of the brain. What to call them? The head hunters. I will return to them later.How do vitamins influence health?A.They protect the body from microbesB.They are broken down by cells to produce energyC.They keep food from spoilingD.They are necessary for some enzymes to function
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 the following question.You should find out as much as about the job and the vacancy.A.a seat that is available B.a job that is availableC.jobs are advertised D.an empty seat
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