Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
The smoke from burning fuels causes pollution if it ...... into the atmosphere.
A.releases
B.is released
C.will be released
D.released

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
The factory was fined for ...... chemicals into the river.
A.discharging
B.dumping
C.producing
D.exposing

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
Oil spills are having a devastating effect on coral reefs in the ocean.
A.powerful
B.significant
C.disastrous
D.detectable

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
People in this region cultivate mainly rice and vegetables.
A.destroy
B.grow
C.develop
D.support

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
The society was set up to ...... endangered species from extinction.
A.prevent
B.distinguish
C.preserve
D.survive

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
The health of our children is being ...... by exhaust fumes.
A.danger
B.endanger
C.dangerous
D.endangered

Choose the sentence which is closest in meaning to the printed one.
The foreman was too powerful to be afraid of the workers.
A.The foreman was powerful enough, but he was afraid of the workers.
B.The foreman wasn't powerful, so the workers didn't fear him.
C.The foreman was very powerful so the workers feared him.
D.The foreman was strong enough: not to fear the workers.

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
The campaign will hopefully ensure the survival ...... the tiger.
A.of
B.for
C.to
D.on

Choose the sentence which is closest in meaning to the printed one.
No sooner had she put the telephone down than her boss rang back.
A.As soon as her boss rang back, she put down the telephone.
B.Scarcely had she put the telephone down when her boss rang back.
C.Hardly she had hung up, she rang her boss immediately.
D.She had hardly put the telephone down without her boss rang back.

Read the passage carefully, then choose the correct answers.
The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity- Converting waste products to gases or oil is also an efficient way to dispose of wastes. Experimental work is being done to derive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in theUnited States, but to day it supplies only 4 percents. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of temperature differences in ocean water to produce energy.
What can be inferred from the paragraph?
A.All alternative production of energy will be derived from water.
B.Hydroelectric power will be the main source of energy.
C.Synthetic fuels will be the principal source of alternative energy.
D.Alternative energy will come from a variety of sources.