89. The government tried to keep commodity prices ______ .

　　 A. moveless　　 B. stable　　　 C. stationary　　　 D. unchangeable

88. Childhood memories ________ before her eyes .

　　 A. floated　　 B. drifted　　 C. flown　　 D. rose

87. An earthquake is a shaking of the ground that　 occurs when ________ rock beneath the surface of the earth change position .

　　 A. a great many　　 B. a mass of　　 C. a number of　 D. a plenty of

86. Plenty of rooms were ________ .

　 A. average　　　 B. favorite　　 C. available　 D. convenient

85. He received much _______ from reading good novels , and his fluency in the English language gives him _________ the other candidates for the job .

　　 A. advantage ;an advantage to　　　 B. benefit ; an advantage over

　　 C. benefit ; the benefit of　　　　　 D. advantage ; a benefit to

84. He was a much older tennis player but he had the great _______ of experience .

　 A. interest　　　 B. benefit　　 C. profit　　 D. advantage

83.Who is most likely to _______ the old lady’s death ?

　　 A. benefit　　　 B. benefit from　　 C. do good to　　　　 D. interest

82. More and more students are _______ this modern type of instruction .

　　 A. resulting from　 B. figuring out　　 C. benefiting from　　 D. bringing up

81. The price of beer ______ from 50 cents to 4 per liter during the summer season .

　　 A. ranged　　 B. differed　　　 C. altered　　　 D. separated

80. The secret of his success is that he does everything _______.

　　 A. efficiently　　 B. curiously　　 C. anxiously　　 D. sufficiently

Unit13