She felt that she was too（ ） with problems to be able to study properly.
A.burdened B.tired C.grieved D.disturbed
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（ ）, the factories had not closed, and those who needed work most were given a chance to survive during the economic disaster.
A.Blithely B.Mercifully C.Glamorously D.Importunately
He wished he（ ）more about the subject, so he could talk about it.
A.had known B.knew C.would know D.knows
Wood carving began as a necessity in America and developed into an art. Because of the lack of other materials, early settlers were forced to make tools and utensils out of wood. At first, these articles were whittled with a knife, but when pioneer craftsmen set up their primitive shops, most of them were fashioned on a lathe—a machine which holds an object and rotates it while it is being shaped by a tool.However, even after Massachusetts-born Blanchard designed a lathe which could turn irregular shapes—an innovation that made possible mass production of gunstocks, shoe lasts, oblong and square woodenware — craftsmen who could use knife and chisel skillfully were still in demand. Some found ready employment in shops of cabinetmakers while others carved decoys. Still others specialized in creating shop signs, shop figureheads, or in decorating interior woodwork. A few even accepted commissions to make busts of prominent citizens.
1.This passage most likely came from a longer work about early American（ ）.2.According to the passage, the first settlers used wood for their utensils and tools because it was（ ） .
3.The passage suggests that early shops for making tools were（ ）.4.It can be inferred from the passage that, before Thomas Blanchard's invention, lathes（ ）.5.According to the passage, when wooden articles began to be mass-produced, what did many individual wood workers do?
A.arts and crafts B.political leaders C.logging industries D.fashion design问题2： A.durable B.inexpensive C.available D.attractive问题3： A.not very sophisticated B.known for doing very quick work C.dependent on imported materials D.frequented only by fashionable people问题4： A.were not made of wood B.could not produce square objects in mass production C.were found only in cabinetmaking shops D.could be used to make most tools and utensils问题5： A.They moved out of Massachusetts B.They found work making specialized items C.They made demands on government leaders D.They took jobs on ships as sailorsThis electronic superhighway is called the Internet,（ ）it is the backbone(主干)of the World Wide Web.
A.and B.yet C.or D.while
The food we eat seems to have profound effects on our health. Although science has made enormous steps in making food more fit to eat, it has, at the same time, made many foods unfit to eat. Some research has shown that perhaps eighty percent of all human illnesses are related to diet and forty percent of cancer is related to the diet as well, especially cancer of the colon. Different cultures are more likely to cause certain different illnesses because of the food that is characteristic in these cultures. That food is related to illness is not a new discovery. In 1945, about 35 years ago, government researchers realized that nitrates, commonly used to preserve color in meats, and other food additives, caused cancer. Yet, these carcinogenic additives remain in our food, and it becomes more difficult all the time to know which things on the packaging labels of processed food are helpful or harmful. The additives which we eat are not all so direct. Farmers often give penicillin to beef and living animals, and because of this, penicillin has been found in the milk of treated cow. Sometimes similar drugs are given to animals not for medical purposes, but for financial reasons. The farmers are simply trying to fatten the animals in order to obtain a higher price on the market. Although the Food and Drug Administration (FDA. has tried repeatedly to control these procedures, the practices continue.
1.What is the best possible title of the passage?2.Which of the following statements is NOT true?3.How has science done something harmful to mankind?4.What are nitrates used for?5.The word 'carcinogenic' most nearly means ‘（ ） ’ .
A.Drug and Food B.Cancer and Health C.Food and Health D.Health and Drug问题2： A.Drugs are always given to animals for medical reasons B.Some of the additives in our food are added to the food itself and some are given to the living animals C.Researchers have known about the potential dangers of food additives for over thirty-five years. D.Food may cause forty percent of cancer in world.问题3： A.Because of science, diseases caused by polluted food haven been virtually eliminated B.It has caused a lack of information concerning the value of food. C.Because of the application of science, some potentially harmful substances have been added to food. D.The scientists have preserved the color of meats, but not of vegetables问题4： A.They preserve flavor in packaged foods. B.They preserve the color of meats C.They are the objects of research D.They cause the animals to become fatter问题5： A.trouble-making B.color-retaining C.money-making D.cancer-causing