Đề ngữ pháp Toefl itp 1994-10

1.Snow aids farmers by keeping heat in the lower ground levels, thereby _____ from freezing.

2._____ mineral content in the bones of very young children is low compared to that of adults.

3._____, the silvery-checked hornbill chooses a hollow tree for a nest and seals herself in until her chicks are grown.

4.A floodplain is an extension of a river channel, _____ not inundated except during a flood.

5.Even though John F. Kennedy failed to receive the Democratic Party’s vice presidential nomination in 1956, _____ won their nomination for President in 1960.

6.Since Tampa has a mild winter climate, _____ as a tourist resort.

7.Cosmetics, rarely noted today for any dangerous properties, have been _____ for serious health problems in the past.

8.The United States Congress made Washington, D.C., _____ in 1800.

9.Astronomer Maria Mitchell was the first woman _____ to the American Academy of Arts and Sciences.

10._____ of staging a play that help the audience understand its structure and meaning.

11.Illustrator Norman Rockwell specialized in finely drawn, richly anecdotal scenes _____.

12._____ depends on the density of both the object and the water.

13.Sturgeons are prized for their blackish roe, _____ when salted and served as an appetizer is called caviar.

14.In Navajo society, not only _____ for food and for woo, but also as a means of payment or exchange.

15.The repertory of a concert band _____ traditionally included flourishes, marches, and music transcribed from other media.

16.Educated at home and requiring to work to support her family, Louisa May Alcott recorded many of her life’s events in her autobiographical novels.

17.It was not until the latter part of the nineteenth century that the Adirondack region of New York State was proper mapped.

18.Such special adaptations as lightweight bodies, widely wings, and unusually soft feathers allow owls to fly silently.

19.Research shows that employees whose obtain satisfaction from their jobs are more productive.

20.As glaciers reach the sea, huge chunks of ice break away of them.

21.With environmental regulations tightening, many of California’s top wine makers are starting grow grapes organically, using no herbicides or pesticides.

22.The panda becoming an endangered species because humans have encroached on the wilderness that is essential to the animal’s survival.

23.Advocates of the art form Abstract Expressionism emphasize free, spontaneous, and personality emotional expression.

24.Pollen grains contains half as many chromosomes as the parent plant.

25.In August 1774 John Adams left Boston and went to Philadelphia in a representative to the First Continental Congress.

26.Mary McLeod Bethune was begun to teach in 1895 and by 1923 had become president of Bethune-Cookman College in Florida.

27.The artist Frederic Remington created a large numbers of paintings of the western United States.

28.Worldwide there are approximately 270 species of carnivorous birds that make up the order Falconiformes, the scientifically name for hawks.

29.From its innermost core to its corona, the Sun has a structure typical of most star of its kind.

30.Although frequent melodramatic, Lillian Hellman’s plays are marked by insight and finesse.

31.Rubbing a glass rod with silk will cause small pieces of dries paper to jump to the rod and cling to it.

32.Tattooing is one of the oldest forms of creative expression, dating it back to at least 8000 B.C.

33.Besides providing clues to the nature of atoms, mineral analysis allows to speculate geologists about the ancient Earth.

34.The first antibiotics were made from alive matter such as molds.

35.Even the richest diamond deposits, tons of rock must be mined and crushed to produce one small diamond.

36.Several ancient cultures presented math in sentences form with little or no abbreviation or symbolism.

37.Secretion by the pancreas into the bloodstream, insulin affects metabolism by allowing cells throughout the body to use glucose as fuel.

38.Most Algonquin Indian tribes except those of the north were sedentary and carried on agriculture with varying degrees of intense.

39.Although cultivated in the new world for hundreds of years, only within the last century the tomato has become recognized as a valuable food.

40.Though the different between any two languages in the world may appear to be great, they seem to function equally well as means of communication.