THEY LAUNCHED A CAMPAIGN TO_________ SMOKING AMONG TEENAGERS, (COU...

60. They launched a campaign to_________ smoking among teenagers, (courage)

READING

(61-75). Choose the word or phrase (a, b, c or d) that best fits the blank space in the

following passage.

The (61)___ of the earth is caused by exhaust gas from automobile engines, factories and

power (62)_____ . Carbon dioxide goes (63)_____ into the atmosphere, and it forms a

kind of screen that keeps or rather allows the sunshine in but stops the earth’s heat

(64)_______ getting out. It works like a greenhouse: that’s why we call (65)_____ the

Greenhouse Effect. Because of this effect, the earth is getting warmer all the time. This

(66)______ in temperature will cause big changes to the world’s climate. The sea level

will rise, the ice (67) he poles will melt and cause the sea level to rise. The second

problem is the (68)_______ of the ozone layer. Certain chemicals float up to the sky and

react with the ozone layer, and they make (69)________ in. Because of these holes the

ultraviolet (70)_________ can shine directly to earth. Many people are now starting to

(71)_____ from skin cancer. The sulfurous (72)_____ from factories and power stations

mixes with rain clouds and gets blown by the wind and then falls as acid (73)_________

which destroys lakes and forests. These three problems (74)______ our environment at

the end of the twentieth century. (75)_____ we do something about them quickly, we,

human race, may disappear from the face of the earth.