Bài luyện tập TOEFL 34

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1. _____ that as both birds and mammals become larger, their metabolic rates per unit of tissue decrease, and they generally live longer.

 
 
 
 

2. Asteroids are small and therefore very difficult to identify, even when _____ to Earth.

 
 
 
 

3. A number of modern sculptors have rejected _____ of minimal and environmental art and developed a style of extreme realism.

 
 
 
 

4. _____ tributaries of the Mississippi River system were navigated by steamboats during the period before the outbreak of the Civil War.

 
 
 
 

5. Mary Eliza McDowell’s introduction to social service came _____, when she assisted victims of the great Chicago Fire of 1871.

 
 
 
 

6. Young herons are helpless for a few weeks _____ they learn to fly.

 
 
 
 

7. The history of painting is a fascinating chain of events that probably began with _____.

 
 
 
 

8. The center of gravity of the human body _____ behind the hip joint.

 
 
 
 

9. The leaves and stems of the alfalfa plant are the only parts of the plant _____.

 
 
 
 

10. _____ choose to live in or near metropolitan areas simply because they like the rapid pace of city life.

 
 
 
 

11. A major purpose of scientific analysis is to identify and examine causal connections between independent and dependence variables.

 
 
 
 

12. Vaccines for some rare diseases are given only to people which risk exposure to the disease.

 
 
 
 

13. Because it is a healthful way to exercise, aerobic dancing is considered an excellent method for release tension.

 
 
 
 

14. Doppler radar can be used to determine the direction which in the particles of a cloud are moving.

 
 
 
 

15. Applied research aims at some specific objective, such as the development of a new produce, process, or material.

 
 
 
 

16. Most of the food what elephants eat is brought to their mouths by their trunks.

 
 
 
 

17. The highly respect zoologist Ernest Just joined the ruling board of the Marine Biological Laboratory in the 1930’s.

 
 
 
 

18. Clementine Hunter’s primitive paintings have been exhibited at various galleries, included one at the Smithsonian Institution in Washington D.C.

 
 
 
 

19. Alike a chicken, the grouse has four toes, with the hind one raised above the ground.

 
 
 
 

20. Membership in labor unions in the United States reached its peak of 17 millions members in 1960.