|
|
|
|
±¾´ÎËÑË÷½á¹ûΪ¿Õ£¬½¨ÒéÄãÐÞ¸ÄÒ»ÏÂËÑË÷µÄ¹Ø¼ü´Ê
±ÈÈçÄãÏëËÑË÷¡°ÐÂÄ¿±ê¾ÅÄ꼶Unit 9 When was it invented£¿¡±Õâ¿Î×ÊÁÏ£º
¿ÉÒÔÔÚËÑË÷¿òÖÐÊäÈë¡°when was it¡±ÕâÈý¸öµ¥´Ê½øÐÐËÑË÷
¹Ø¼ü´ÊÔ½¶Ì£¬ËÑË÷³É¹¦µÄ¿ÉÄÜÐÔÔ½´ó¡£
��һӢ��ڶ�ʮ�嵥Ԫ ¹²¡º0¡»Æª, ·Ö0Ò³ÏÔʾ µ±Ç°Ò³ºÅ:1 | |
Sorry£¬±¾´ÎËÑË÷½á¹ûΪ¿Õ£¬½¨ÒéʹÓÃÏ·½µÄ°Ù¶ÈËÑË÷ÊÔÊÔ£¡ |
|
|
¡¡ |