READING COMPREHENSION
Question 1-10
The agricultural revolution in the nineteenth century involved two things: the invention of labor-saving machinery and the development of scientific agriculture. Labor-saving machinery naturally appeared first where labor was scarce. "In Europe, said Thomas Jefferson, "the object is to make the most of their land, labor being abundant: here it is to make the most of our labor, land being abundant. It was in the United States, therefore, that the great advances in nineteenth-century agricultural machinery first came.
At the opening of the century, with the exception of a crude plow, farmers could have carried practically all of the existing agricultural implements on their backs; by 1860, most of the machinery in use today had been designed in an early form. The most important of the early inventions was the iron plow. As early as 1790 Charles Newbold of New Jersey had been working on the idea of a cast-iron plow and spent his entire fortune in introducing his invention. The farmers, however, were not interested in it, claiming that the iron poisoned the soil and made the weeds grow. Nevertheless, many people devoted their attention to the plow, until in 1869 James Oliver of South Bend, Indiana, turned out the first chilled-steel plow.
1.What is the main topic of the passage? (A) The need for agricultural advances to help feed a growing population (B) The development of safer machines demanded by the labor movement (C) Machinery that contributed to the agricultural revolution (D) New Jersey as a leader in the agricultural revolution
2.The word "naturally" in line 3 is closest in meaning to (A) unsurprisingly (B) gradually (C) apparently (D) safely
3. The expression "make the most of" in line 4 is closest in meaning to (A) get the best yield from (B) raise the price of (C) exaggerate the worth of (D) earn a living on
4. Which of the following can be inferred from what Thomas Jefferson said (line 3-5)? (A) Europe was changing more quickly than the United States. (B) Europe had greater need of farm machinery than the United States did. (C) The United States was finally running out of good farmland. (D) There was a shortage of workers on United States farms.
5.The word "here" in line 4 refers to (A) Europe (B) United States (C) New Jersey (D) Indiana
6. What point is the author making by stating that farmers could carry nearly all their tools on their backs. (A) Farmers had few tools before the agricultural revolution. (B) People in the United States were traditionally self-reliant. (C) Life on the farm was extremely difficult. (D) New tools were designed to be portable.
7. When was the iron plow invented? (A)In 1790. (B) In the early 1800 s. (C) In 1869. (D) In the early 1900 s.
8. According to the passage, which of the following statements about Charles Newbold is true? (A) He was James Oliver s assistant. (B) He was born in Europe. (C) He was opposed to scientific agriculture. (D) He spent his own money to promote his invention.
9. The word "it" in line 12 refers to (A) scientific agriculture (B) James Oliver s invention (C) the cast-iron plow (D) Charles Newbold s fortune
10. Why did farmers reject Newbold s plow? (A) Their horses were frightened by it. (B) They preferred lighter tools. (C) It was too expensive. (D) They thought it would ruin the land.
Questions 1l-20
According to some scientists, migratory birds should be able to withstand the winter. A bird s feathery coat is good insulation against the cold. Because a bird is warm- blooded, its body temperature always remains constant, even if the temperature of its surroundings changes.
The factors that trigger migratory behavior in birds are difficult to explain. This behavior seems to be instinctive, not learned. For example, many northern species leave their summer homes while the weather is still warm and the food supply plentiful. Young arctic terns born at the arctic breeding grounds will lake off with the flock for distant lands they have never seen.
Bird migrations are probably regulated by the glandular system. Scientists suspect that the changing length of the day is the factor that triggers migratory behavior. In an experiment, migratory birds were kept in artificially lighted rooms. It was found that if periods of darkness were lengthened proportionately, the glands of the birds became active. These glands secrete hormones, which are chemicals that control numerous body functions. Shorter periods of daylight seem to change the hormone balance of birds, so that they retain more fat. This stored fat is the fuel that provides the energy for a long flight. The same experiment revealed that the birds became more excited as the artificial night was lengthened. It is probably no coincidence that most flocks begin their migratory
[1] [2] [3] [4] 下一页 |