Which season is your favourite season, spring, summer, autumn or winter? I like autumn best. Autumn is the time for harvest(收获). In autumn I can eat many different fruits：apples, pears, grapes and so on. I can also eat fresh vegetables. Autumn is cool. I feel comfortable(舒适的). I am happy to see the leaves turn red and yellow.

苏格拉底被马克思称为“哲学的创造者”，主要是因为他

下列各点，与亚马孙平原城市兴起自然条件吻合的是（   ）   
图中x、y、z分别表示影响城市区位的气候、地形、河流因素，箭头方向表示条件越来越好。 

Jack does his homework ____ (care), so he often gets poor grades.