专业四级完型填空练习..docxVIP

突击专四完形填空Our apemen forefathers had no obvious natural weapons in the strugg le for survival in the open. They had neither the powerful teeth nor the strong claws of the big cats. They could not ___ 1___ with the bear, whose strength, speed and claws ___ 2___ an impressive “smallfire”weaponry. They could not even defend themselves? ___ 3___ running swiftly like the h orses, zebras or small animals. If the apemen had attempted to compete on thos e terms in the open, they would have been ___ 4___ to failure and extinction. But they were ___ 5___ with enormous concealed advantage of a kind? not possessed by any of their competitors.In the search ___ 6___ the pi ckings of the forest, the apemen had ___ 7___ efficient stereoscopic v ision and a sense of color that the animals of the grasslands did not possess. T he ability to see clearly at close range permitted the apemen to study practic al problems in a way that lay far ___ 8___ the reach of the original inhabitants of the grassland. Good longdistance sight was ___ 9___ anothe r matter. Lack of longdistance vision had not been a problem for forestdwelling apes and mondeys because the higher the viewpoint, the greater the range of sight—so ___ 10___ they had had to do was climb a tree. Out in the open , however, this simple solution was not ___? 11? ____. Climbing a hill would have helped, but in many places the ground? was flat. The apemen ___ 12___ the only possible solution. They reare d 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 slower still. ___ 13___, they persevered and their bone structure graduall y became ___ 14___ to the new, unstable position that ___ 15___ them the name Homo erectus, upright man.1. A. match? B. compare?? C. rival? D. equal2. A. became??? B. equipped?? C. posed? D. provided3. A. in??? B. in?? C