更多"Clashes began（）"的相关试题:
[填空题]Newton was ever involved in heated clashes with other academies.
[单项选择]How many people died in the clashes between Iraqi demonstrators and US troops
A. More than 8.
B. More than 13.
C. More than 38.
[单项选择]The full influence of mechanization began shortly after 1850, when a variety of machines came rapidly into use. The introduction of these machines frequently created rebellions by workers who were fearful that the machines would rob them of their work. Patrick Bell, in Scoffland, and Cyrus McCormick, in United States, produced threshing machines. Ingenious improvements were made in plows to compensate for different soil types. Stream power came into use in 1860s on large farms. Hay rakes, hay-loaders, and various special harvesting machines were produced. Milking machines appeared. The internal-combustion engine run by gasoline became the chief power source for the farm. In time, the number of certain farm machines that came into use skyrocketed and changed the nature of fanning. Between 1940 and 1960, for example, 12 million horses and mules gave way to 5 million tractors. Tractors offer many features that are attractive to farmers. There are, for example, numerous attachments: cultivators that can penetrate the soil to varying depths, rotary hoes that chop needs; spray devices that can spray pesticides in bands 100 feet across, and many others. A piece of equipment has now been invented or adapted for virtually every laborious hand or animal operation on the farm. In the United States, for example, cotton, tobacco, hay, and grain are planted, treated for pests and diseases, fertilized, cultivated and harvested by machine. Large devices shake fruit and nut from trees; grain and blend feed, and dry grain and hay. Equipment is now available to put just the right amount of fertilizer in just the right place, to spray and exact row width, and to count out, space, and plant just the right number of seeds for a row. Mechanization is not used in agriculture in many parts of Latin America, Africa. Agriculture innovation is accepted fastest where agriculture is already profitable and progressive. Some mechanization has reached the level of plantation agriculture in parts of the tropics, but even today much of that land us laboriously worked by people leading draft animals pulling primitive plows. The problems of mechanization in some areas are not only cultural in nature. For examples, tropical soils and crops differ markedly from those in temperate areas that the machines are designed for, so adaptations have to be made. But the greatest obstacle to mechanization is the fear in underdeveloped countries that the workers who are displaced by machines would not find work elsewhere. Introducing mechanization into such areas requires careful planning.The first paragraph uses several examples to convey the ideas that ______.
A. the introduction of machines into agricultural work created rebellions on the part of the farmers
B. the use of internal-combustion engine as a chief power source for the farm produced great influence
C. the mechanization of agricultural work after 1850 gradually robbed many farmers of their work
D. ingenious improvements were made in fanning machines in the 1860s to yield production
[单项选择]
Passage Four
| In 1807 Noah Webster began his greatest
work, An American Dictionary of the English Language.In preparing the
work, he devoted ten years to the study of English and its relationship to other
languages, and seven more years to the writing itself. Published in two volumes
in 1828, An American Dictionary of the English Language has become the
recognized authority (权威) for usage in the United States. Webster’s purpose in
writing it was to show that the American language was developing distinct
meanings, pronunciations, and spellings from those of British English. He is
responsible for advancing simplified spelling forms: "develop" instead of the
British form "develope"; "theater" and "center" instead of "theatre" and
"centre"; "color" and "honor" instead of "colour" and
"honour". |
When was An
A. 1817.
B. 1807.
C. 1828.
D. 1824.
[单项选择]
Researchers Discover Why Humans Began Walking Upright
Most of us walk and carry items in our hands every day. These are seemingly simple activities that the majority of us don’t question. But an international team of researchers, including Dr. Richmond from GW’s Columbian College of Arts and Sciences, have discovered that human walking upright, may have originated millions of years ago as an adaptation to carrying scarce, high-quality resources. The team of researchers from the US, England, Japan and Portugal investigated the behavior of modern-day chimpanzees as they competed for food resources, in an effort to understand what ecological settings would lead a large ape—one that resembles the 6 million-year old ancestor we shared in common with living chimpanzees—to walk on two legs.
"These chimpanzees provide a model of the ecological conditions under which our earliest ancestors might ha
A. Many people question the simple human activities of walking and carrying items.
B. Chimpanzee’s behaviors may suggest why humans walk on two legs.
C. Human walking upright is viewed as an adaptation to carrying precious resources.
D. Our ancestors’ ecological conditions resembled those of modern-day chimpanzees.
[填空题]Amazon began by selling books online.
[填空题]Archeologists began excavating the ruins of Pompeii 250 years ago ______ (但迄今为止该城最大的宝藏仍待发现).
[单项选择]Scientists began to try making synthetic diamonds towards the end of the eighteenth century and discovered a key scientific fact.
A. 科学家试图开始制造人造钻石，接近十八世纪末时发现了一个关键的科学事实。
B. 科学家开始努力制造人造钻石，十八世纪结束时发现了能解决科学实际的答案。
C. 科学家开始努力制造人造钻石，在十八世纪结束时找到了解决科学实际的钥匙。
D. 接近十八世纪末，科学家开始尝试制造人造钻石，并发现了一个关键的科学事实。
E. 接近十八世纪末期，科学家开始制造人造钻石，并且发现了一个关键的科学事实。
