13 . ( I ) Wars are nothing more than massacres . ( II ) Nine out often casualties in warfare are civilians . ( Ill ) The vast majority of the victims of war never wore a uniform or carried gun . ( IV ) They are under threat of imprisonment , torture , and displacement . ( V ) Although they need protection from murder , torture or starvation , the governments generally neglect them .
A ) I B ) II C ) III D ) IV E ) V
14 . ( I ) Sprigg ' s discovery of Edicaran fossils was hailed as the long-sought solution to Darwin ' s problem . ( II ) Scientists felt that they had finally found the simple ancestors of modern animals . ( Ill ) A consensus is emerging that the Edicaran organisms fall into two main categories .( IV ) It was a tidy story but it didn ' t last . ( V ) In 1983 an influential German paleontologist named Dolf Seilacher attacked the idea that Edicaran organisms gave rise to modern animals .
A ) I B ) II C ) III D ) IV E ) V
15 . ( I ) Chocolate has been for many centuries enjoyed chiefly as a beverage . ( II ) Its popularity began in the Americas , where the cacao tree grew wild . ( III ) It is a favourite drink made from cacao beans . ( IV ) In the early 1500s , when Cortez conquered Mexico , the Aztec emperor Montezuma served him a drink called chocolatl . ( V ) Cortez brought the beverage back to Spain and with sugar , vanilla and cinnamon added to sweeten the bitter drink , so it became a favourite with the Spanish aristocracy .
A ) I B ) II C ) III D ) IV E ) V
16 . ( l ) Eastern-Aegean vaulting techniques before the Roman occupation were largely derived from Egyptian and Mesopotamian architectures . ( II ) Hellenistic architecture rarely , if ever , used brick vaulting of any sort for reinforcement over domed rooms . ( Ill ) Unlike the later Romans , the Egyptians used a " pitched-brick " technique , which laid the bricks on end ; with the longer sides touching and the shorter sides comprising the visible ceiling of the vault . ( IV ) During Imperial Roman times , a new technique of brick vaulting was imported from Italy . ( V ) These vaults laid the bricks flat , and were less durable when built with local materials .
A ) I B ) II C ) III D ) IV E ) V
17 . ( I ) The Barred Owl is a medium-sized greybrown owl streaked with white horizontal barring on the chest and vertical barring on the belly . ( II ) They are round-headed with a whitish / brown facial disk with dark brown trim . ( III ) A very opportunistic hunter , a Barred Owl can sometimes be seen hunting before dark . ( IV ) The eyes are brown , and the beak is yellow and almost covered by feathers . ( V ) They have a long tail and there is no difference in plumage between males and the larger females .
A ) I B ) II C ) III D ) IV E ) V
18 . ( I ) Cyclones are constantly recurring fact of life in Bangladesh . ( II ) But the one that hit the country on 29 April 1991 was the worst for a decade . ( III ) However , controlling the flow of water can reduce the risks of floods . ( IV ) Within hours , 130.000 people were dead and four million people were homeless . ( V ) Conditions were so bad that , only a week after the cyclone , many felt that the dead , not the living , were the fortunate ones .
A ) I B ) II C ) III D ) IV E ) V
19 . ( I ) It is common for a liquid to turn into a vapour when heated . ( II ) It is less common for a solid substance to turn directly into a vapour without ever going through a liquid stage . ( III ) The best known example of this latter process is solid carbondioxide , which has the appearance of cloudy ice . ( IV ) When this is heated , it doesn ' t turn into liquid but to gas . ( V ) Indeed , nuclear reactions involving certain substances are highly complex and unpredictable .
A ) I B ) II C ) III D ) IV E ) V
20 . ( I ) In the universe , hydrogen is apparently the most abundant of all the elements . ( II For instance , analysis of the light emitted by stars indicates that most stars are predominantly hydrogen . ( III ) Molecular hydrogen is the lightest of all gases . ( IV ) Similarly , of the sun ' s mass , approximately 90 % is hydrogen . ( V ) However , hydrogen is much less abundant on the earth .
A ) I B ) II C ) III D ) IV E ) V