说明：阅读下面的短文，从短文后所给各项的四个选项(A、B、C、D)中选出能填入相应空白处的最佳选项。

People live in groups, which we call societies. Societies and social relations are the subjects (　1) in the social sciences. Men depend on other men and on the world around (　2). The sun brings them warmth (暖和，热烈) and light, day and night, summer and winter. Plants grow (　3) there is air and sunshine, earth and water; animals depend on plants; (　4) depend on water, air, sunshine, and the plants and animals around them.

Wherever people live and (　5) they look like, many of their requirements are the (　6). They need food and places to live (　7), warmth and sleep. They need (　8) social existence (存在，生存), they need friendship and relationship (关系) which will (　9) to marriage and family life. The members of a society depend on one ( 10). In different societies we find different ways of finding ( 11) and different methods of preparing it. Societies have ( 12) habits and customs. They teach their children, care for ( 13) people, look after old people in various ways. They have different ( 14) in life, death and the world ( 15) which they were born.

Most men ( 16) to live in peace. The members of every social group accept certain rules and customs ( 17) expect other members to know them. Children are taught to ( 18) these rules, and what they do in ( 19) life depends partly on the habits they ( 20) when they were young.

　1.explained　 　learned　 searched　studied　

　2.itthem　useveryone　

　3.that　where　 　whether　 for　

　4.men　 lives　 　societies　 　relations

　5.however　 which　 　how　 whatever　

　6.like　similar　 one　 same　

　7.oninwith　by

　8.offor　 a　 　that　

　9.gomove　lead　come　

 10.other　 　another　 each　thing　 　

 11.food　meal　crops　 　minerals　

 12.old　 modernvarious　 limited　

 13.educated　healthy　 sick　middle-aged　

 14.talks　 　positions　 　beliefs　 attitudes　 　

 15.from　over　into　beyond

 16.want　think　 　have　believe　

 17.and　 orbut　 so

 18.get　 use　 followform　

 19.latter (后面的，后者)　

late　

later　

latest　

 20.taughtknew　learned　 received　

答案:
DBBAD  DBCCB 
ACCCC  AACCC