问题 选择题

关于生物资源的叙述,不正确的是(  )

A.生物资源是可再生资源

B.生殖与发育是生物资源可再生的基础

C.生物资源取之不尽,用之不竭

D.科技进步可使生物资源的生产量得到提高

答案

生物多样性,简单地说,就是生物及其生存环境的多样性;确切地说,生物多样性包括包括地球上所有的植物、动物和微生物及其所拥有的全部基因和各种各样的生态系统.生物多样性通常有三个主要的内涵,即生物种类的多样性、基因(遗传)的多样性和生态系统的多样性. 生物的多样性为人类提供了丰富的生物资源,是人类衣食住行的来源,为食品、纺织等工业提供了生产原料,但是生物资源也不是取之不尽、用之不竭的,人类要合理开发利用自然资源,保持自然资源的可持续发展.现在随着人类活动的加剧、环境的破坏等因素的影响,生物的多样性面临着严重的威胁.因此我们要注意保护生物的多样性.故C符合题意.

故选:C.

单项选择题
阅读理解

Each child has his individual(个人的)pattern of social, as well as physical, development. Some of it depends on his home life and his relationships with the people who love him. Children in large families learn how to get along with others through normal brother- sister play and tussles (打斗). An only child, on the other hand , may have to learn his lessons in social living through hard experiences on the playground or in the classroom. Twins who always have one another to lean on may be slow in responding to others because they do not need anyone else.

  A child who is constantly scolded and made to feel he does everything wrong may have a difficult time developing socially. He may be so afraid of displeasing the adults around him that he keeps to himself (where he can’t get into trouble)or he may take the opposite route and go out of his way to create trouble. Like the deserted child, he too may return to infantile (幼稚的)pleasures, developing habits that will satisfy him, but create barriers(障碍)toward social contact.

小题1:Which of the following may have effect on children’s paten of social development?

A.Age.     

B.Education

C.Home life.   

D.Gender(性别)小题2:The passage implies that which of the following may have the earliest time learning to get along with others?

A.An only child

B.A child from a large family

C.Twins

D.Children who are continually scolded小题3:Which of the following is implied by the passage?

A.Too much scolding of children may make their social development difficult.

B.All children developed in the same ways.

C.Children who are constantly scolded may learn to get along with others quickly.

D.Deserted children often exhibit quicker social development.小题4:We can inferred from the passage that ________.

A.continual scolding is not harmful to the child.

B.continual scolding holds back healthy social development.

C.continual scolding has no effect on obeying orders.

D.continual scolding has no effect on physical development小题5:Where does the passage say the only child learns his social lessons?

A.School and home        

B.Home and playground

C.Classroom and playground    

D.All of the above