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 is the best title of the passage?




A.The Use of Water Products for Energy
B.The Search for Alternative Sources of Energy
C.Efficient Ways of Disposing of Waste
D.New Discoveries in Geothermal Power

Choose word or phrase that needs correcting.
It was suggested that Pedro studies (A) the material more (B) thoroughly before attempting (C) to pass (D) the exam.




A.studies
B.more
C.attempting
D.to pass

Choose the word or phrase that best completes the sentence or substitutes for the underlined word or phrase.
Completed in 1756, Nassau Hall is the oldest building now ______ on the campus ofPrincetonUniversity.




A.standing
B.it stands
C.has stood
D.stood

Choose the words that has the underlined part pronounced differently from that of the others.




A.sun
B.solar
C.safe
D.sure

Choose the word that has the underlined part pronounced differently from that of the others.




A.exactly
B.exist
C.exhaust
D.extinct

Despite/ short day/ we/ complain/ much/ do.




A.Despite such a short day, we tend to complain about having too much to do.
B.Despite such a short day, we tend to complain having too much to do.
C.Despite a short day, we tend to complain about too much to do.
D.Despite such short day, we tend to complain about having too much do.

If it hadn't been for his carelessness, we would have finished the work.




A.He was careless because he hadn’t finished the work.
B.If he was careful. we would finish the work.
C.If he had been more careful, we would have completed the work.
D.Because he wasn't careless, we didn‘t finish the work.

The word “striking” in paragraph 2 is closest in meaning to_______




A.physical
B.confusing
C.noticeable
D.successful

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
Among the problems facing the national park's manager, the most serious ones are those of ...... and expansion.




A.improvement
B.reassessment
C.distinction
D.maintenance

Choose the word or phrase A, B, C, or D that best completes the sentence or substitutes for the underlined word or phrase.
Wild animals ...... in their natural habitat will have a better and longer life than those which are kept in protected areas.




A.live
B.to live
C.living
D.lived