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| 文章出处：学生大考试站 发布时间：2005-10-12 |
ave helped, but in many places the gro und was flat. The ape-men ( 37 ) the only possible solution. They reared up as high as possible on their hind limbs and began to walk upright . This vital change of physical position brought about considerable disadvantages. It was extremely unstable and it meant that the already slow ape-men became slo wer still. ( 38 ) , they persevered and their bone structure gradually became ( 39 )to the new,unstable position that ( 40 ) them the name Homo erectus,upright man.
26. A. match B. compare C. rival D. equal
27. A. became B. equipped C. posed D. provided
28. A. in B. upon C. by D. with
29. A. driven B. doomed C. forced D. led
30. A. bestowed B. given C. presented D. endowed
31. A.for B. of C. on D. at
32. A. progressed B.generated C.developed D.advanced
33. A.from
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