89. The computer system _________ suddenly while he was searching for information on the Internet. (2006年高考辽宁卷)

A. broke down 　 　　B. broke out　 　　　 C. broke up 　　　　 D. broke in

88. As the director can’t come to the reception, I’m representing the company　　 _____.

A. in his behalf　 　B. on his behalf　　 C. for his behalf　　 D. at his behalf

87. The situation worsens by the hour and we have no idea what will ___________ us.

A. become of　 B. belong of　　 C. belong to　　　 D. become to　

86. Without facts, we can’t form a correct opinion, for we need to have actual knowledge　　　　 _______ which to ________ our thinking.

　　 A. on; carry　　 B. on; believe　　 C. on; base　　 D. on; back

85. Energy is usually measured ________, and goods are sold ________.

　　 A. by calories; by the weight　　 　　B. by the calorie; by weight

C. with calories; on weight　　　 　　D. in calories; by weight

84. It’s quite 　　　　　me why such things have been allowed to happen.

A. for　　　　 　B. behind　　　　　 C. against　　　 　D. beyond

83. Yesterday I was _________ in the rain on my way back home, and I got a bad cold and coughed very badly.

　 　　 A. captured　　　 B. arrested　　 　C. caught　　 　　　D. cheated

82. The five mascots (吉祥物), Beibei, ,Jingjing, Huanhuan, Yingying and Nini, meaning in English “Welcome to Beijing”, ________ a message of friendship to people all over the world.

　　 A．communicate　　　 B．represent　 　　 C．classify　 　　D．circulate

81. It is surprising that such an innocent-looking man should have _____ such a crime.

　 A. confirmed　　　 B. clarified　　　 　C. committed　　　 D. conveyed

80. Companies must consider how they ________data so that their employees can find it fast.

A. classify　　　 B. recognize　　　 　C. store　　　　　 　D. accumulate