问题 选择题

下列说法正确的是(  )

A.在生物各类群之间,所处的共同分类单位越小,它们之间的相似程度则越小

B.在生物各类群之间,所处的共同分类单位越大,它们之间的亲缘关系则越大

C.在生物各类群之间,它们之间的相似程度越大,亲缘关系则越远

D.在生物各类群之间,它们之间的相似程度越大,亲缘关系则越近

答案

生物分类单位由大到小是界、门、纲、目、科、属、种.界是最大的分类单位,最基本的分类单位是种.分类单位越大,生物的相似程度越少,共同特征就越少,包含的生物种类就越多,生物的亲缘关系就越远;分类单位越小,生物的相似程度越多,共同特征就越多,包含的生物种类就越少,生物的亲缘关系就越近.如人种:黄种人、白种人、黑种人,他们相似程度多,亲缘关系就近.

故选:D.

阅读理解

For many businessmen online education has been a dream.Now it has come true.The investment (投资) in higher education, whether financial or in terms of time, has long been impossible for many of them.But well-known educational institutions have chosen to deliver an internet-based program, and these barriers(障碍) have been lifted.

  That is good news for people eager to improve themselves and is more attractive to employers.It is also a benefit to industry with better qualified candidates(候选人) applying for jobs at every level.

  Having the benefits of a higher qualification(资格) without going to the university campus is attractive to many students.Campus study means greater cost, while online programs are flexible and save time, whether at home or at work.Students can achieve their degrees without causing too much disruption to their career or home life.

  In addition to affordable, flexible(灵活) classes and greater convenience, students also have access to the online learning resources of many of the world’s top educational institutions.They can also communicate with their tutors no matter what time it is or whether either party is away for any reason.

  This has opened up the possibility of getting a qualification from a university or college that many students could only have dreamed of in the past.It also allows specialists to get the precise qualifications and focus on their studies.As well as seeing the increase of applicants from lower-incomes and housewives, studying online in the US is even becoming popular with younger people of college age.

  Employers have become increasingly welcome and positive to online qualifications as more candidates earn them, especially if they’re properly approved by the US Department of Education.

  US institutions have led the way in online education provision(供给).Many top US colleges and universities offer a range of online programs that are highly respected and in every way perfectly fit for adults who need to combine their studies with a working life.

小题1:According to Paragraph 1, many US colleges and universities ______.

A.have begun to lift the barriers to financial investment

B.have begun to run an internet-based program

C.have had a dream of offering online education

D.have gained financial investment小题2:Why do people choose online education?

A.They can find jobs more easily than on-campus graduates.

B.They can get qualifications from US Department of Education.

C.They can save money and arrange their time and courses freely.

D.They can invest money in different courses provided online.小题3:The underlined word “disruption” in the third paragraph probably mean ______.

A.dissatisfaction  

B.attention

C.attraction

D.interruption小题4:Which would be a good title for the passage?

A.Adult Education Online

B.Online Education Taking the Place of Campus Education

C.Top US Universities Offering Online Education

D.The Best of USA’s Online Education

问答题 简答题