Đề 25: Đề thi toefl itp 15 câu đầu

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

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 —.

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

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

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.

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

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

— duties are placed on commodities according to their value.

— about individuals who really existed and things that actually happened.

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

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

During the late 1850’s the question of the best route for the overland mail to California was — in the West.

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

— wooden buildings helps to protect them from damage due to weather.

Carbohydrates are the most abundant and — food sources of energy.