¡¡¡¡ÎÄÖÐͨ¹ýÊ·Ç°´óÐͶ¯ÎïµÄÃð¾øÊÇÏë˵Ã÷
¡¡¡¡[A] ´óÐͶ¯ÎïÔÚ»·¾³·¢Éú±ä»¯µÄʱºò¸üÈÝÒ×Êܵ½É˺¦
¡¡¡¡[B] Ëæ×Å´óÐͶ¯ÎïµÄÃð¾ø£¬Ð¡ÐͶ¯ÎïÈ´Éú´æÁËÏÂÀ´
¡¡¡¡[C] ´óÐͺ£Ñó¶¯ÎïÏÖÔÚ¿ÉÄÜÃæÁÙͬÑùµÄÍþв
¡¡¡¡[D] Éú³¤»ºÂýµÄÓãÀà±ÈÉú³¤¿ìËÙµÄÓãÀà»îµÃ¸ü¾Ã
¡¡¡¡32. We can infer form Dr Myers and Dr. Worm¡¯s paper that
¡¡¡¡[A] the stock of large predators in some old fisheries has reduced by 90%
¡¡¡¡[B] there are only half as many fisheries are there were 15 years ago
¡¡¡¡[C] the catch sizes in new fisheries are only 20% of the original amount
¡¡¡¡[D] the number of larger predators dropped faster in new fisheries than in the old
¡¡¡¡[´ð°¸] A
¡¡¡¡[½âÌâ˼·]
¡¡¡¡ÎÄÕµڶþ¶Î×îºóÁ½¾ä»°Ëµ¡°According to their latest paper published in Nature, the biomass of large predators (animals that kill and eat other animals) inanes fishery is reduced on average by 80% within 15 years of the start of exploitation. In some long-fished areas, it has halved again since then¡±(¸ù¾ÝËûÃÇ×î½üÔÚ¡¶×ÔÈ»¡·ÔÓÖ¾ÉÏ·¢±íµÄÎÄÕ£¬ÔÚÒ»¸öÐÂÓ泡ÖдóÐÍʳÈ⺣ÑóÉúÎï(Ò»ÖÖɱËÀ²¢³ÔµôÆäËü¶¯ÎïµÄÉúÎï)µÄ×ÜÁ¿ÔÚ15ÄêµÄʱ¼äÀïƽ¾ù¼õÉÙÁË80%¡£¶øÔÚһЩ´óÐ͵IJ¶Ó㳡£¬Õâ¸öÊý×ÖÓÖ½øÒ»²½¼õ°ë)¡£15Äêƽ¾ù¼õÉÙÁË80%£¬15ÄêÖ®ºóÓÖ¼õÉÙÁËÒ»°ë£¬(Ò²¾ÍÊÇ20%ÖеÄ10%)£¬¼ÓÆðÀ´ÊÇ90%£¬Òò´ËÕýÈ·´ð°¸ÊÇA¡£B¡¢CÑ¡ÏîÃ÷ÏÔ²»ÕýÈ·¡£µ«ÊÇDÑ¡ÏîÓкÜÇ¿µÄ¸ÉÈÅÐÔ£¬ÒòΪ¸ÃÑ¡Ïî´ÓijÖÖÒâÒåÉÏÀ´ËµÊÇÕýÈ·µÄ£¬µ«ÊÇûÓÐAÑ¡ÏîµÄ±íÊö¾ßÌåºÍ¾«È·¡£
¡¡¡¡[ÌâÄ¿ÒëÎÄ]
¡¡¡¡ÎÒÃÇ¿ÉÒÔ´ÓMyersºÍWorm²©Ê¿µÄÂÛÎÄÖÐÍƶϳö
¡¡¡¡[A] ÔÚһЩÀÏÓ泡£¬´óÐÍÈâʳÓãÀàµÄÊýÁ¿¼õÉÙÁË90%
¡¡¡¡[B] ÏÖÔÚµÄÓ泡ÊýÁ¿Ö»ÊÇ15ÄêÇ°µÄÒ»°ë
¡¡¡¡[C] ÐÂÓ泡µÄ²¶ÓãÁ¿Ö»ÓÐÔÀ´µÄ20%
¡¡¡¡[D] ÐÂÓ泡´óÐÍÈâʳÓãÀàµÄÊýÁ¿Ï½µ±ÈÀÏÓ泡¿ì
