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(单选题)The use of money is not limited to high civilizations; actua (单选题)The assignment is ______ easy. It took us three days to fini (单选题)Poor as he was, he was ______ making profits at the expense (单选题)The newest fiber-optic cables that carry telephone calls cro (单选题)One of the most outspoken educators in New York, Dr. Shalala (单选题)Though good at mathematics, Catherine always ______ before a (单选题)We had better put off interviewing the athlete, for he is bu (单选题)—Is there any chance of my being promoted?—If you want a pro (单选题)By the time she ______ in the gymnastics tournament at the N (单选题)Facial recognition technology is working well at tourist att