Đề ngữ pháp Toefl itp 2002-09

1.Many scientists believe _____ as a result of a collision between the newly formed Earth and a large asteroid.

2.The organ-pipe cactus is _____ in the United States.

3.Willa Cather,_____, gained recognition for her books concerning the American frontier.

4.The average wavelength of visible light is 2,000 times _____ the diameter of an atom.

5._____ ants live in nests, which may be located in the ground, under a rock, or built above ground and may be made of twigs, sand, or gravel.

6.The banking systems of the world have many similarities, _____ they also differ, sometimes in quite material respects.

7.Learning that takes place in infancy provides the____ for the eventual transformation of a child into an adult.

8.In the late 1930’s and early 1940’s, Jacob Lawrence created many paintings _____ the lives of famous African American activists.

9.The Centennial Exposition, _____ in Philadelphia, Pennsylvania, in 1876, celebrated the one-hundredth anniversary of the Declaration of Independence.

10.In the dark abyss of the deep sea _____ is produced by luminescent fish.

11.classic American novel Moby Dick____ an account of the conflict between human beings and their fate.

12.In the metals industry, hydrogen is used to prevent metals from tarnishing while undergoing_____.

13.The Executive Mansion, constructed in the 1790’s and now popularly called the White House, is oldest public edifice in Washington,D.C.

14.Inventor Elisha Graves Otis designed the first elevator that it incorporated an automatic brake, which in turn led to the development of the skyscraper.

15.Although the term “corrosion” applies mostly to metals and particularly to their reaction to oxygen, all material are subject to surface deterioration.

16.The chief commercial source of bromine is ocean water, from what the element is extracted by means of chemical replacement by chlorine.

17.Like Jupiter and Earth, Saturn is flattened at a poles.

18.All living things are made up of one or more cells, and each of these cells were produced by an already existing cell.

19.It is believed that some dinosaurs were intelligent, ability to perform complex activities, and perhaps even capable of social behavior.

20.Unique among bivalves, scallops swim extremely well, propelled by jets of water expelled while snapped the shell shut.

21.In the period between 1918 and 1939, various political, economic, and geographic

factors combined in determine the extent to which a country developed civil aviation.

22.The main attractive at Sequoia National Park is thirty-five groves of giant sequoias, the largest living things in the world.

23.In films, optical printing can be combined with blue-screen photography for produce such special effects as characters seeming to fly through the air.

24.The developed coutries of the world are using up valuable resources at a rate unprecedented human history.

25.An activist for women’s rights, Leonora O’Reilly promoted women’s vocational training besides fought for increased wages for garment workers.

26.Cameras of one type or another have been using for more than a hundred years.

27.Electricity is the phenomenon associated with positively and negatively particles charged of matter at rest and in motion, either individually or in great numbers.

28.Air, which it is a mixture of elements oxygen and nitrogen and compounds water and carbon dioxide, also contains small quantities of many other substances.

29.The planets far from the Sun are so remote from any heat source that their temperatures are thought to be much near absolute zero.

30.Some claim that vegetarian diets may to be more healthful than a diet that includes meat, since they generally contain less fat and more fiber.