Lesson 16 - TOEFL Structure

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

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 ___.

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

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

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.

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

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

8) ___ duties are placed on commodities according to their value.

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

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

Grammar Easy Grammar Medium Grammar - Difficult
1->25 26->49 50->75 76->99 100->125 126->164
Ôn Tập Ngữ Pháp Phần 1 Ôn Tập Ngữ Pháp Phần 2