托福语法选择题练习及答案1

　　1. There is evidence that prehistoric humans used fire --- 400,000 B. C.

　　(A) so early

　　(B) the earliest

　　(C) as early as

　　(D) so early that

　　2. In the late 1800's Ellen Richards, began work in the new field of "sanitary science" which was concerned with waste removal, water purification and ---.

　　(A) to ventilate adequately

　　(B) adequate ventilation

　　(C) adequate ventilation

　　(D) ventilation adequately

　　3. --- red clover, high in protein content, is an extremely important leguminous hay and pasture plant of the eastern United States.

　　(A) The

　　(B) There us the

　　(C) It is the

　　(D) That the

　　4. The topology of Mars is more --- than that of any other planet.

　　(A) like that of the Earth

　　(B) the Earth's like that of

　　(C) like the Earth of that

　　(D) that of the Earth's like

　　5. Ostriches are --- of living birds, attaining a height from crown to foot of about 2.4 meters and a weight of up to 136 kilograms.

　　(A) large, strong

　　(B) large and strong

　　(C) larger and strong

　　(D) the largest and strongest

　　6. The glaciers that reached the Pacific Coast were valley glaciers, and between those tongues of ice --- that allowed the original forests to survive.

　　(A) that many sanctuaries were

　　(B) were many sanctuaries

　　(C) were there many sanctuaries

　　(D) there the many sanctuaries

　　7. --- orbits the Sun, Uranus rotates on its axis, an imaginary line through its center.

　　(A) For it

　　(B) It

　　(C) As it

　　(D) There is

　　8. --- duties are placed on commodities according to their value.

　　(A) Ordinarily, tariff

　　(B) Ordinary tariffs are

　　(C) On ordinary tariff

　　(D) Tariffs are ordinarily

　　9. --- about individuals who really existed and things that actually happened.

　　(A) Folktales which sometimes tell stories

　　(B) The stories of folktales sometimes telling

　　(C) Stories sometimes told are when folktales

　　(D) Folktales sometimes tell stories

　　10. --- matter in one form is transmuted to another form, a phase change is said to have taken place.

　　(A) Such

　　(B) Then

　　(C) Whenever

　　(D) Seldom

　　11. Noise, in the technical sense, implies a random chaotic disturbance ---.

　　(A) usually does not want

　　(B) usually is unwanted

　　(C) that one does not usually want it

　　(D) that is usually unwanted

　　12. During the late 1850's the question of the best route for the overland mail to California was --- in the West.

　　(A) interest of a serious topic

　　(B) a serious interest of topic

　　(C) a topic of serious interest

　　(D) serious interest of a topic

　　13. In his book, Social Theory and Social Structure, sociologist Robert Merton explored --- in ways that society considers abnormal.

　　(A) those individuals whose behavior

　　(B) why do individuals whose behavior

　　(C) why individuals behave

　　(D) the behavior of those individual who

　　14. --- wooden buildings helps to protect them from damage due to weather.

　　(A) Painting

　　(B) Painted

　　(C) The paint

　　(D) By painting

　　15. Carbohydrates are the most abundant and --- food sources of energy.

　　(A) least cost

　　(B) least costly

　　(C) less cost

　　(D) fewer costs

　　参考答案：

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