WHAT WE KNOW ABOUT CERTAIN DISEASES ARE STILL NOT SUFFICIENT TO PR...

44. What we know about certain diseases are still not sufficient to prevent them from spreading

A B C

easily among the population.

D

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the

word or phrase that best fits each of the numbered blanks.

Environmental Concerns

Earth is the only place we know of in the universe that can support human life. (55) _____

human activities are making the planet less fit to live on. As the western world (56) _____ on

consuming two-thirds of the world's resources while half of the world's population do so just to stay

alive we are rapidly destroying the (57) _____ resource we have by which all people can survive

and prosper. Everywhere fertile soil is (58) _____ built on or washed into the sea. Renewable

resources are exploited so much that they will never be able to recover (59) _____. We discharge

pollutants into the atmosphere without any thought of the consequences. As a (60) _____ the

planet's ability to support people is being reduced at the very time when rising human numbers and

consumption are (61) _____ increasingly heavy demands on it.

The Earth's (62) _____ resources are there for us to use. We need food, water, air, energy,

medicines, warmth, shelter and minerals to (63) _____ us fed, comfortable, healthy and active. If

we are sensible in how we use the resources, they will (64) _____ indefinitely. But if we use them

wastefully and excessively, they will soon run out and everyone will suffer.