①DNA双螺旋结构的发现　　　　　　　　②成像技术

③人类基因组计划的实施　　　　　　　④我国研制出甲型H1N1流感疫苗

    What will man be like in the future—in 5,000 or even 50,000 years from now? We can only make a guess, of course, but we can be sure that he will be different from what he is today, for man is slowly changing all the time.

    Let us take an obvious example. Man, even five hundred years ago, was shorter than he is today. Now, on average, men are about three inches taller, so we may assume (假定) that man will continue to grow taller. Again, as time goes on, we shall have to use our brains more and more. This is likely to bring about a physical change to the head, in particular, the forehead will grow larger.

    Nowadays our eyes are in constant use. In fact, we use them so much that very often they become weaker and we have to wear glasses. But over a very long period of time it is likely that man's eyes will grow stronger.

    On the other hand, we are likely to make less use of our arms and legs, which, as a result, are likely to grow weaker. At the same time, however, our fingers will grow more sensitive because they are used a great deal in modern life.

    But what about hair? This will probably disappear from the body altogether in course of time because it does not serve a useful purpose any longer.

    Perhaps all these give the impression that in the future man will not be a very attractive creature to look at! This may well be true. All the same, in spite of all these changes, future man will still have a lot in common with us.

西方有一句谚语说：“辉煌属于希腊，宏伟属于罗马。”希腊的“辉煌”主要得益于( )

比较阅读下面两篇文言文，完成下面小题。

      【甲】虽有佳肴，弗食，不知其旨也。虽有至道，弗学，不知其善也。是故学然后知不足，教然后知困。知不足然后能自反也；知困然后能自强也。故曰：教学相长也。

——《虽有佳肴》

      【乙】学者①有四失②，教者③必知之。人之学也，或失则多④，或失则寡⑤，或失则易⑥，或失则止⑦。此四者，心之莫同也⑧。知其心，然后能救其失也。教也者⑨，长善而救其失者也。

——《学者有四失》

     【注释】①学者：学习的人，即学生。②失：过失，缺点。③教者：教育者，即老师。④多：学得过多（而不去实践）。⑤寡：学得太少。⑥易：把学习看得太容易。⑦止：遇到困难就不再学习。⑧心之莫同也：心理各有不同。⑨教也者：做教师的（人）。