Question

ÈôÓã¨1£©£¨2£©£¨3£©£¨4£©ËÄ·ùͼÏó·Ö±ð±íʾÏÂÃæËĸöº¯ÊýµÄ¹Øϵ£¬Çë¸ù¾ÝͼÏóËù¸ø˳Ðò£¬½«ÏÂÃæµÄ£¨a£©£¨b£©£¨c£©£¨d£©Ëĸöº¯Êý¹Øϵ¶ÔÓ¦ÅÅÐò£º
£¨a£©¾²Ö¹µÄС³µ´Ó¹â»¬µÄбÃæÉÏ»¬Ï£¬Ð¡³µµÄËÙ¶ÈyÓëʱ¼äxµÄ¹Øϵ£»
£¨b£©Ò»¸öµ¯»É²»¹ÒÖØÎïµ½Öð½¥¹ÒÖØÎµ¯»É³¤¶ÈyÓëËù¹ÒÖØÎïxµÄ¹Øϵ£»
£¨c£©Ô˶¯Ô±ÍƳöÈ¥µÄǦÇò£¬Ç¦ÇòµÄ¸ß¶ÈyÓëʱ¼äxµÄ¹Øϵ£»
£¨d£©Ð¡Ã÷´ÓAµ½Bºó£¬Í£ÁôÒ»¶Îʱ¼ä£¬È»ºó°´Ô­ËÙ¶Èԭ··µ»Ø£¬Ð¡Ã÷µ½AµÄ¾àÀëyÓëʱ¼äxµÄ¹Øϵ£®
ÕýÈ·µÄ˳ÐòÊÇ

1. A.
   £¨c£©£¨d£©£¨a£©£¨b£©
2. B.
   £¨a£©£¨b£©£¨c£©£¨d£©
3. C.
   £¨c£©£¨b£©£¨a£©£¨d£©
4. D.
   £¨d£©£¨a£©£¨c£©£¨b£©

Answer 1

A
·ÖÎö£º¸ù¾Ýÿ¸öʵ¼ÊÎÊÌ⣬ÅжϺ¯ÊýͼÏó£¬ÔÙ¸ù¾Ý¶ÔÓ¦¹ØϵÅÅÐò£®
½â´ð£º£¨a£©¾²Ö¹µÄС³µ´Ó¹â»¬µÄбÃæÉÏ»¬Ï£¬Ð¡³µµÄËÙ¶ÈyÓëʱ¼äxµÄ¹ØϵÊÇ£ºÐ¡ÇòÔ­À´µÄËÙ¶ÈÊÇ0£¬Ëæʱ¼äµÄÔö¼Ó£¬ËÙ¶ÈÔö¼Ó£¬¶ÔÓ¦µÄͼÏóÊÇ£¨3£©£»
£¨b£©Ò»¸öµ¯»É²»¹ÒÖØÎïµ½Öð½¥¹ÒÖØÎµ¯»É³¤¶ÈyÓëËù¹ÒÖØÎïxµÄ¹Øϵ£ºµ¯»ÉÔ­À´ÓÐÒ»¶¨µÄ³¤¶È£¬Òò¶øµ±x=0ʱ£¬yµÄÖµÒ»¶¨´óÓÚ0£¬²¢ÇÒyËæxµÄÔö´ó¶øÔö´ó£®¶ÔÓ¦µÄͼÏóÊÇ£¨4£©£»
£¨c£©Ô˶¯Ô±ÍƳöÈ¥µÄǦÇò£¬Ç¦ÇòµÄ¸ß¶ÈyÓëʱ¼äxµÄ¹ØϵÊÇÅ×ÎïÏߣ¬¶ÔÓ¦µÄͼÏóÊÇ£¨1£©£»
£¨d£©Ð¡Ã÷´ÓAµ½Bºó£¬Í£ÁôÒ»¶Îʱ¼ä£¬È»ºó°´Ô­ËÙ¶Èԭ··µ»Ø£¬Í¼ÐÎÓÉÈýÌõÕÛÏß×é³É£¬¶ÔÓ¦µÄͼÏóÊÇ£¨2£©£®
ËùÒÔ£¬¶ÔÓ¦¹ØϵµÄ˳Ðò£¨c£©£¨d£©£¨a£©£¨b£©£®
¹ÊÑ¡A£®
µãÆÀ£º¶Áº¯ÊýµÄͼÏóʱÊ×ÏÈÒªÀí½âºá×Ý×ø±ê±íʾµÄº¬Ò壬Àí½âÎÊÌâÐðÊöµÄ¹ý³Ì£¬Äܹ»Í¨¹ýͼÏóµÃµ½º¯ÊýÊÇËæ×Ô±äÁ¿µÄÔö´ó£¬ÖªµÀº¯ÊýÖµÊÇÔö´ó»¹ÊǼõС£®