第二部分英語知識運(yùn)用(共兩節(jié),滿分45分)
第一節(jié)單項(xiàng)填空(共15小題;每小題1分,滿分15分)
21. China, a country with 145 million elderly people, will remain _______ ageing society during this century, according to _______ Chinese population experts.
A. /; the B. an; / C. an; the D. the; /
22. He devoted most of his time to his research, believing his hard work would ___sooner or later.
A. put off B. take off C. come off D. pay off