DINK, "Double Income No Kids", (1) to families that consist of a husband and wife who both work. The number of such families has (2) 600, 000 in major cities, revealed by the Fifth National Population Census. It has been reported that 17 million adults are (3) to become DINK families. There seems to be some relationship between DINK families and people with high educational backgrounds. Based on questionnaires collected from couples who have been married for five years and are of childbearing age, Horizon Research, a (4) research firm, announced that about 10% of the Beijing families with an (5) education of junior colleges do not want any children. At the same time, a survey among female undergraduates, (6) by the China Social Investigation Institute, found that 42.4% of them do not want kids after marriage. Another (7) further confirmed that more and more people in the Chinese mainland began embracing the concept of DINK families. In big cities such as Beijing, Shanghai, Guangzhou and Chengdu, over one-fifth of women aged 15 to 59, are in (8) of DINK families, while 24.7% of young and middle-aged women advocate marriage without children. To holders of master's degree or above, the main reasons for childbearing were (9) from top to bottom as "complete a family, bring happiness and (10) to a family, make parents happy, maintain conjugal relations, and reproduce". A) struck I) inclined B) finding J) affection C) effect K) declined D) specialized L) hit E) conducted M)average F) survey N) sequenced G) favor O) refers H) professional