Question

[Truongduy]

12. They are those that live on or depend on the bottom like the starfish, those that move ________ of water currents and those that are carried along by the currents.

A. independence​B. independent​C. independently​D. dependent

13. Some marine animals are _________ to humans.

A. danger​​B. dangerous​​C. endangered​​D. dangerously

14. You may be surprised at the large ----------- of animals that live in the sea.

A. variety ​B. variously ​ ​C. various D. vary

15. Community police have made a very positive ______ to crime prevention.

A. contribute​​B. contributive​​C. contribution​D. contributively

16. They are investigating the ______ disappearance of a young woman.

A. mystery​​B. mysterious​​C. mysteriously​D. mysteries

17. By the age of eighteen he was completely ______ of his parents.

A. dependence​​B. dependently​C. dependent​​D. depend​

18. The ______ of the seabed is being carried out.

A. investigate​B. investigative​C. investigation​D. investigating

19.For centuries, people have been challenged by the ___________ that lie beneath the ocean.

A. mystery​​B. mysterious​​C. mysteriously​D. mysteries

20.Dolphin population is at stake due to the _______of their habitats and accidental entrapment in fishing nets.

A. pollute​​B. pollutive​​C. pollution​​D. pollutants​

21. Nairobi National Park is Kenya’s smallest park, but you may be surprised at the large ______ of animals that live there.

A. vary​B. variety​C. various​D. variously

22. Visitors, especially children, can go to Cuc Phuong National Park to learn how to recognize the ---------species of animals and plants.

A. differ​​B. difference​​C. different​D. differently

23. This national park is _____ because it has plants and animals from both tropical and temperate zones.

A. specially B. special B. specialize D. specialization

24. The giant panda is in danger of becoming extinct. It is an -------species.

A. dangerous​​B. dangerously C. endanger ​D. endangered

25. Trees, grasses, and other plant life play an important part in the _______ circulation of water.

A. natural ​​B. nature​​C. naturally​​D. naturalize

26. Without plants, most water would run off as soon as it falls, taking away ______ soil.

A. value​​B. valuable​​C. valuably​​D. values

27. The earth is being threatened and the future looks _______.

A. bad​​​B. badly​​​C. badness​​D. worsen

28. Man is _______ doing harm to the environment.

A. constancy​​B. constant​​C. constantly​​D. constants​

29. A campfire near a heap of leaves may _____ cause a forest fire.

A. ease​​​B. easy​​​C. easily​​D. eases

30. A gulf is a term that refers to the ________ of different kinds of animals and plants which make a balanced environment.

A. exist​​​B. existence​​C. existent​D. existed